I connected the "signal" grounds to the terminal where I ground all of the megasquirt grounds. Add to cart. I probed the wiring harness and had continuity between pin 2 and the corresponding pin on the VR connector, so the screen appears to be connected. 99. During installation I added the wire from S12 to C end of D1 on the MS3X card per page 231/2. Would 18 gauge be alright to run from the MS. Ibrahim Nzioki On Twitter 2 Engine Harness Layout Since The Donor Was From An E36. 4. MS3base/V3. 5 out of 5 $ 114. Add to wishlist. 8′ of TXL High temp automotive grade wire. You may also consider switching to a VW coils, they're logic level and you don't. 1. All you are doing is connecting the OEM plugs to the FlowForce harness. At least that's what the wiring diagram that came with it says. 99 Add to cart MegaSquirt 3 EMS System V3. 0 ECU, which is based on Megasquirt-3 technology and features an MS3 card and an MS3X expansion card on a through hole V3. Use with MS3X Expansion board or other sequential device Just like a short run of the MS3X harness, but with no DB37 connector. On the diagram, it shows only one wire coming for the harness, I assume the other wire will be the keyed positive. 50. Harness Length and get Free Shipping on Orders Over $109 at Summit Racing! Shop the Labor Day Deals and Save Now! Vehicle/Engine Search Vehicle/Engine Search Make/Model SearchSimply choose your injector style from the drop down menu! This package includes an MS3Pro 1st Gen ECU. Would 18 gauge be alright to run from the MS. New MS3X wiring products available Post by Matt Cramer » Wed Oct 06, 2010 10:12 pm In addition to our new MS3X harness , we've used our new harness-building equipment to come up with three other MS3X related wiring items:Anyone onto the questions. MS3X Tach Output. GeorgePatches wrote: I actually found the answer on the megamanual website for the MS2. All that looks good, so I’m going to get a new sensor tomorrow. Hardware manual covering specific wiring and configuration of your Megaquirt MS3X/V30 ECU. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 0. What grade of wiring is used? This harness uses 20 gauge TXL high temperature automotive wiring. Connect the 12 gauge red fan power wire to a spare terminal on the fuse. MegaSquirt MS3X Wiring Bundle - sequential fuel injection and ignition (Dual Stage Nitrous, 2nd O2 Sensor, Boost/Launch Control, etc) 23" LongMs3 wiring diagram ms3x tracking gauge issues down help megasquirt questions grounding question miata o2 turbo fuel reply miataturbo portsWideband aem ms3 canbus pnp 2001 straightforward helpful Wiring diagram megasquirt sensor ms2 ms3 crank position harness diyautotune fc db37 ms1 switch work signal rpm problem thumbnail. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . Internal pull up: For a V3. I have pictured what i think is the main starting circuit relays or the main relays off of the zxt. Wire wiring ms3x g2 sensor forums porsche deleted ground engine should redMegasquirt ms3x wiring harness install pt. 99. The spark wires might be custom or stock. AI-enhanced title. 4 Crank / Cam Inputs The Crank and Cam sensors provide the. The harnesses worked out great but what I noticed was that I started soldering and heat shrinking before I had all of the wires ran so I. 57, solder a 1K resistor in the R57 position. 8′ MegaSquirt Wiring Harness for MS3X. Standalone engine management system based on Megasquirt MS3x Processor and firmware with enhanced inputs and output ports in sealed enclosure and sealed automotive connector. Memories: '68 912, '72 911T, '80 911SC, '84 911,. . On to all the injectors. 24″ MegaSquirt Pigtail MS3X Harness $ 79. I am installing a 1997 Ford Explorer 5. ‘Optional’ MegaSquirt Relay Board – Assembled Unit. . 57 is a little. g. Also i a using the newest firmware on the ms3x, I believe it is 1. 60. 00 38NPT-Bung_A: Aluminum bung for IAT sensor (Also available in stainless steel) $6. 1987 Supra - 2JZ-GE NA-T MS3 + MS3X Wiring Check. This is for 1. GM uses a 20aw so I would think that would be. Wiring Harness Adapter Guide For E30 M60 And Obd 1 M62 Swap Pinout A Cheap Way Of Getting X20 C101 Connectors Rts Your Total Bmw Enthusiast. 0 specific1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. MS3X on 2010 Camaro LS3 + Whipple @ 10psi + HPT + AEM 30-0333/0334 WB. ms3x box w/harness. SAYS IF HALL SENSOR. Length Harnesses, Kit See. Shop Wiring Harnesses at Summit Racing. I've gotten the truck running great and was pleasantly surprised with the motors performance. Connect the longer OEM 3-way connector to the matching LS coil connector with a green wire. New MS3X wiring products available Post by Matt Cramer » Wed Oct 06, 2010 10:12 pm In addition to our new MS3X harness , we've used our new harness-building equipment to come up with three other MS3X related wiring items:Ms3x sync loss problemsWiring diagram megasquirt sensor ms2 ms3 crank position harness diyautotune fc db37 ms1 switch work signal rpm problem thumbnail fuel Pro ms3 wiring diagram ultimate ms3pro megasquirt enclosure resistant developed provide gen 1st cart details addMegasquirt wiring 2gn ms3 ms3x. Get a Quote. 18" pigtail harness for VVTuner variable valve timing controller. I did a MS3x install last winter and used DIY's 10' wiring harnesses. DB37 Solder Cup Connector for MS3X $ 8. I'm looking for a wiring harness diagram / schematic for a 1987 911. MegaSquirt MS3X wiring harness Install Pt. 9 Magnum. 4. Add Shielded Cable To MS3X Harness. Wiring harnesses at carid. 0 mainboard. We've got a pre-assembled MS3 with the MS3X extra board, and I believe it is a V3. MS3X + 4 bar mapsensor + harness. 0 too, but the point gurov makes is fair - using identical drivers for both sides is good practice. I have a couple questions I have some resistors to be able to run TFI as well as the ms3x card so I can easily run my PWM IAC and my A/C. 8′ wiring harness or 24″ wiring pigtail; MS3X harness or 24″ MS3X pigtail; GM open element IAT sensor; 3/8″ NPT bung in aluminum or stainless steel; MS3 USB tuning cable; W ideband O2 sensor system; Feedback welcome. There are aftermarket versions of this controller out there with harnesses for under $30. My firing order 1,3,7,2,6,5,4,8 SPKA - Coil #1. 0, wire TachSelect to VRIN and TSEL to VROUTINV. 00 StimPower: JimStim power supply $83. The MS3X/V3. 3. We are almost done pulling wires in the engine bay at this point. 99 DIYAutoTune MegaSquirt MS3X Wiring Harnesses Wiring Harness, MegaSquirt MS3X , 8 ft. 2. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. Alot of time the shield wire of the crank wiring is left untouched, but it needs to be grounded. I get to installing the MS3X. But what if you’d like to see the inputs and outputs on the MS3X expansion card in action, too? Now it’s easy – just add a JimStimX! Use the three pull-off jumpers on the JimStim to connect the 5 volt power, ground, and cam signal to the JimStimX, and you can test the outputs with the. Color coded wiring with labeling printed on. ( 8 customer reviews) $ 1,749. Well at this point between the wiring. And when grounding them to the Megasquirt when. General Tech Forums. Regular price $109. 0 parallel install, full sequential, HPX MAF, Ford Ev6 47lb injectors, COP, custom 8 BIP373 box, E85 pump, teflon lined return style fuel system, 39 lb base fuel pressure, Twin Turbo @ 7lbs boost, Dual 4 port boost solenoids, Dual 14point7 widebands Posted January 28, 2014. MS3Pro ULTIMATE Pinout Glossy Card. 2 high impedance injector outputs – max peak current increased to 19 amps. 99. So i could start to set the Tooth #1 Offset while cranking without sparks and a throttle body. The R pin is the HEI module’s tach output. 99 Quantity Add to cart MegaSquirt MS3X Wiring Harness – 8 feet 8′ of TXL High temp automotive grade wire. MS3Pro ULTIMATE Pinout Glossy Card. Subscribe. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. Top. External Ignition Wiring. Since my MS3X is already installed and running my 1997 Vortec 350ci Truck, all I have to do is splice into the factory wiring for the signal hopefully this will. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. but also more difficult because there are way more wires and sensors in the engine wiring harness to connect to, especially the US. MS3X/V3. Pins 19 through 14 should remain bundled on an adequately sized ground wire to the engine block. 180-0715 Wiring Harness - Direct Fit, Sold individually. MegaSquirt MS3X Wiring Harness – 8 feet 8′ of TXL High temp automotive grade wire. megasquirt ms3x v3. I installed a MS3 cable harness when I installed MSII last year. For those wanting a complete, ready-to-go setup with harness, calibrations, etc then look at the. At that. there are some other controllers that. I was poking around tuner studio and noticed that I had the ability to set the firing order once I. External pull up: Connect a 1K resistor between the wire on pins 24 and 26 on the main board harness. 8. MS3X/V3. IAC and Ignition wire have been added for MS-I / MS-2 use or MS-3 Primary Harness Use 8′ of TXL High temp automotive grade wire. Setup your vehicle wiring harness ensuring it is fused. Matt Cramer -1966 Dodge Dart slant six running on MS3X. 8′ of TXL High temp automotive grade wire. This version of the documentation applies to: • MS3 on a V3. 00. MegaSquirt Relay Cable. jsmcortina Site Admin Posts: 39392 Joined: Mon May 03, 2004 9:34 am Location: Birmingham, UK. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. They feature color-coded wiring with labeling printed on the wire every 6 in. ModMotorMayhem. Length Harnesses, Kit See More Specifications | Check the Fit Estimated Ship Date: Oct 31, 2023 Would you rather pick it up? Select Location Drop Ship Special Order Add To Cart Beat A Price Guarantee Wish List Compare Summit Racing Equipment SpeedCard A. C1, and B1 body harness connectors to get power and the auxiliaries working. Ibrahim Nzioki On Twitter 2 Engine Harness Layout Since The Donor Was From An E36. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. 3 high current digital/pwm outputs. Would 18 gauge be alright to run from the MS. With initial cranking, the LEDs flash in the correct firing order sequence, then they just seem to lose the plot and go random when sync loss kicks in. 1. MS3Pro EVO Standalone Engine Management System w/ Harness. x Dated: 2015-06-03 Hardware manual covering specific wiring and configuration of your Megaquirt MS3X/V357 ECU. If I am using an MS3 with MS3X, do I use this harness or the MS3X harness? The MS3 with MS3X has two DB37 connectors, each of which use a harness. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . I know there is a wiring problem somewhere and expected so because I'm splicing into the factory harness. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Use with MS3X Expansion board or other sequential device. . Distributor Wire Colors: 280ZX and Z31 300ZX. Regular price $2,099. And all this is taking more than I had planned. ( 8 customer reviews) $ 1,749. . 0 Hardware Guide 2. 0, solder a 1K resistor to a length of wire and run it from the 5 volt point in the proto area to the TachSelect-VRIN jumper. ( 7 questions) 5 out of 5 based on 6 customer ratings. 050 on 114LSA cam sequential fuel and sequential spark LS3/LSA card MAF sensor 97 Mazda MX5 MS3 2002 vvt motor. Yeah, you need to test each coil in test mode to make sure they're even wired up correctly. 5 out of 5. I am also using the MS3X to drive my injectors and pin 36 on my mainboard harness only switches my CDI on and off for ignition so my mainboard harness doesn't really need to. MS3Pro Ultimate Configurable Inputs/ Outputs: 10 channel 4:1 or 8:2 programmable peak and hold injector outputs. MS3Pro Ultimate Standalone w/ LSX drop in Harness. 0 engine in my 1988 Mustang that had a 4 cylinder previously. The MS3Pro measures approximately 8. This model is equipped for basic, batch fire, but can be expanded to add sequential injection and 8 channel ignition control with an MS3X card (sold separately). SAYS IF HALL SENSOR. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. MegaSquirt MS3X Wiring Pigtail for full sequential fuel injection and ignition, as well as tons of other I/O (Dual Stage Nitrous, 2nd O2 Sensor, Boost/Launch Control, etc)- as for tach output, it seems that I use wire number 26 from the ms3x db37 to the tach. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. 57 board, the ms3x wiring harness, 7mgte CPS and am getting decent cam/crank signal(not full sync yet, however I have full sync at crank and up to around 1000rpm, but that's another topic). 0 too, but the point gurov makes is fair - using identical drivers for both sides is good practice. 1. Color coded wiring. I have. I've also tried the nitrous in. Which outputs (A,B,C and D) go to. 5″ – much easier to incorporate into your projects than trying to use a V3. 3) MS3 Cam Input (Dual VR v2. Each wire comes with stamped labels every 3" along the length of the wire for easy identification. To start viewing messages, select the forum that you want to visit from the. 5 out of 5 $ 114. Ok. It is capable of controlling sequential injection on engines up to 8 cylinders, or semi-sequential up to 16 cylinders, combined with direct fire ignition for. $79. billr wrote: If it will fire while cranking, then die as soon as the key is released back to the "run" position, it seems like your primary problem is how the ignition switch is wired to provide power; probably has nothing to do with the tune. When I planned my harness I put in a few +12V circuits for supplying things like IAC, sensors, injectors, etc. 8′ MegaSquirt Wiring Harness for MS3X. I am now trying to wire together an ignition system, but I'm essentially starting from scratch. Wiring ms3 pro diagram ultimate ms3pro genMegasquirt ms3x wiring diagram Wideband aem ms3 canbus pnp 2001 straightforward helpfulMegasquirt3 wiring diagram. ( 6 customer reviews) $ 1,599. Click here to download the standard MS3Pro documentation. My tach was originally driven from the Neg side of a single 12V coil. MS3 w/code 1. RX7 Series 2 13B Turbo. Yeah, you need to test each coil in test mode to make sure they're even wired up correctly. MegaSquirt MS3X Wiring Harness – 8 feet8′ of TXL High temp automotive grade wire. I am in the final stages of drawing up my wiring diagram for Megasquirt MS3X on a 3. 8′ MegaSquirt Wiring Harness for MS3X. I'm setting up my wiring for my Dodge Van with 5. I bought a de-pin tool so I can repin my DIY harness and have done it exactly as shown in the first diagram (ms3x) - with each sensor getting a ground wire. x (See the Setting Up manual for more detail on version numbers. 1. one sensor wire is adequate. 8′ MegaSquirt Wiring Harness for MS3X. 00 MS3X-Hrn: 8' MS3X wiring harness $22. Then I checked from the bulkhead to the Ms, that was good. Powered up my MS3x 3. This product is manufactured in Gainesville, Georgia, USA. The heart of the beast! A turbocharged 2JZ dancing to the tune of an MS3X ECU. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 00 MSHarness: 8' main board wiring harness $86. MS3/x ground wiring. MS3 units with MS3Xpander will need a second wiring harness; we carry a ready made one priced at $86. MegaSquirt MS3X Wiring Bundle – Length = 8′. 2 digital outputs. What sort of serial cable does it use? It uses the same DB9 to 2. Add to cart. 8′ MegaSquirt Wiring Harness for MS3X 5 out of 5 $ 114. 6 with itbs & ms3x into g50 carrera – the story so far MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. The wiring harness connector is sold separately as we give you a choice of a ready-to-crimp connector, or a pre-crimped pigtail. Both on the. 2. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. 57 with MS3X $99. overall cost is a big factor to me. MegaSquirt Wiring Harness 8' MegaSquirt Wiring Harness 8' Regular price $99. The wire colours are not chosen at random, but rather have logic to them. 3) MS3 Cam Input (Dual VR v2. 82 - 83 280zx Turbo distributor wiring plug. Se the following two screen shots. In the end, the largest wires I used for the ECM side of things was 18awg for the injectors and coils, and that was. SAYS IF HALL SENSOR. 57 assembled kit, both harnesses,elec boost controller,iac adaptor . This manual covers MS3X/V3. Pin 9 - Green / White. It's a bitch reading the spark wires. ( 14 questions) 5 out of 5 based on 8 customer ratings. 12G main feed and 16G out to the fans. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . Internal pull up: For a V3. Also i a using the newest firmware on the ms3x, I believe it is 1. Had a question about the signal ground to MS3 (Pin B) - I assume since the coil switching is coming from the MS3X board it would be better to ground to this rather than the main board ?. RX7 Series 2 13B Turbo. the US Shift Pick-4 trans contoller is kinda expensive at $750 for harness and controller. C4 Tech/Performance - MS3X wiring to 91 HEI7 and ECM harness - Can someone confirm the C3, C9 and D13 ECU pin out function names and wiring colors pls? Bentley and Chevy Thunder are not consistent when describing these three. 8′ MegaSquirt Wiring Harness for MS3X. MegaSquirt MS3X Wiring Pigtail - Length = 24" 24" of TXL High temp automotive grade wire. Re: MS3 knock sensor wiring question. Learn how to set up and tune your MS3X/V3. 6 engine with ITBs, COPs, MS3X 2021 Macan S Day job. MegaSquirt MS3X Wiring Harness for full sequential fuel injection and ignition, as well as tons of other I/O (Dual Stage Nitrous, 2nd O2 Sensor, Boost/Launch Control, etc)MegaSquirt MS3X Wiring Harness – 8 feet. Would 18 gauge be alright to run from the MS. A typical installation on a VG30E would use the following parts: $692. Under the hood I just made 'pigtails' from the other side of the multiplugs where i was adding new wiring, and ran wires to that, soldered, heat shrink. I have a couple questions I have some resistors to be able to run TFI as well as the ms3x card so I can easily run my PWM IAC and my A/C. Manual and Guide Full List. 24″ of TXL High temp automotive grade wire. The 3 wire IAC driver is the only circuit there and it is not tied to any of the pins on the 55 pin connector. I like using the relay boards because they simplify the wiring process and they make it a lot easier to have a clean install. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 0 mainboard with MS3X as shown above running firmware MS3 1. to the Megasquirt. SAYS IF HALL SENSOR. 0 0 Hardware Guide General layout for 4-cyl coil-on-plug using LS coils. And used MS harness wire #30 to control the IAC valve. I also have a Mustang 91 with T5 transmission and would like to use traction control feature. Wire spark output A (MS3X pin 14) to the stock ignition module trigger wire. The goal is to get the VE table to generate and AFR out the exhaust as close to the target AFR as possible. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . If someone with more experience could look over my setup I'd be ecstatic I know there is a wiring problem somewhere and expected so because I'm splicing into the factory harness I have 3 out of 8 injectors firing <-FIXED and no spark when running test. 1 uF capacitor from JS10 to SG or the proto area ground. On a V3. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. Color coded wiring with labeling printed on the wire every 6 inches — no paper. 3. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 99. 70 Subtotal without wideband . Ms3x Wiring Png. Connect a 0. . MS3 3. SAYS IF HALL SENSOR. The MS3X also uses a similar VR conditioner for its cam input circuit that adjusts in the same way. If that's the case how can I change the inputs; From what I understood I would just unhook the 2 ignition wires from the db37 harness and run it into my ms3x expansion harness under SPARK A and SPARK B. Note that the DIY Autotune wiring harness has a shielded wire – connect only the inner wire to this pin! Connect the E pin to MS3X pin 14 to send the timing signal to the HEI module. This Excel file details the required connections for Megasquirt 3 (MS3) and the Megasquirt 3 Extender (MS3x), using an 88 pin connector and wiring harness from either the 1992 325i (E36, Motronic 3. comNeotech mega accordion harness Harness mega wiring ram 2006 cab dodge rear door mopar 2500 oem 2009Harness megasquirt 12ft. Build the ECU up to trigger for inverted VR output. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. 5 digital input/ output. Filter (0 active) Filter by. Naturally, I have raised these on the MS forum, but there is next. MegaSquirt MS3X Wiring Bundle - Length = 23" ~23" of TXL High temp automotive grade wire. Matt Cramer -1966 Dodge Dart slant six running on MS3X. by lastermann » Tue Dec 27, 2011 6:27 pm. SAYS IF HALL SENSOR. 1998-2002 GM LS1 / LS6 Drive by Cable EFI Wiring Harness HAR-1012 LS1 Harness Instructions. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. Add to wishlist. MegaSquirt MS3X Wiring Bundle – Length = 8′. 12′ MegaSquirt Wiring Harness (MS1 / MS2 Ready) and possibly the MS3X Harness as well if you’re running the MS3X board. 1. Well, apparently I’m not too brave lol. 99 Add to cart MegaSquirt 3 ECU with MS3X Expansion 5 out of 5 $. 1). Where is this harness made? We assemble this harness in Gainesville, Georgia, USA. 1. MegaSquirt MS3X Wiring Bundle – Length = 23″. by Dennis930 » Fri Jul 30, 2010 1:56 am. the story so farMs3x miata megasquirt Ms3x sync loss problemsWiring megasquirt ms3x harness wire labels diyautotune bundle diagram automotive close. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here!Yesterday my wiring harness was finished. MegaSquirt MS3X Wiring Bundle – Length = 23″ ~23″ of TXL High temp automotive grade wire. On the diagram, it shows only one wire coming for the harness, I assume the other wire will be the keyed positive. I have the MS3X harness wired up to the Quadspark but can't find any info on how to wire the Quadspark to the Ford factory coils. So the wire diagram shows the crank sensor the ground going to pin 1 on the MS3 main connector. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. I connected the "signal" grounds to the terminal where I ground all of the megasquirt grounds. I'm hoping to finish wiring my harness for my MS3/X rotary project. Depending on your fan, this may or may not be adequate. MegaSquirt 3. the universal Terminator X 550-937 kit is like $1070. Wire to pin 8 for 1G and 2G MS3X connector: pins 2, 3, 8, 12, 17 Wire with your grounds from the mainboard pin 4 Injector F output (cyl 6) Wire to pin 16 for 1G and 2GRe: MS3+MS3X and the EEC-IV adapter board Post by xrattiracer » Sun Mar 28, 2010 5:50 am what exactly would be the point of using a ms3x with the stock ford harness? you would have to add all sorts of extra wires for the extra functions anyway. See the MS3 manual wiring diagram for how to wire it up. Customer reviews. I've had a build thread for the car going for quite sometime now which can be found here: Basically, at this point I've begun to build the wiring harness and wanted to not only ask a couple of questions, but confirm a few things I believe to be correct. The R pin is the HEI module’s tach output. Does the DIY MS3 wiring harness have wires populated for these pins? (Pins 5-6 on the MS3 output). 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. You don't need that ignition module, you ve COP on your car and you need to find a way to ignite your coils with MS3X spark outputs. Some MS3X harnesses don't include shielded wire on their trigger input. The wiring diagram looks very nice. 49 IATwPiggy: Intake Air Temperature Sensor $9. I connected my "PWR" grounds from the LS1 coils to the engine block on a short run of wire to keep them out of the wire loom. Build the ECU up to trigger from the VR Input. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Use with MS3X Expansion board or other sequential device. Megasquirt 3 with 3X Expander and V3 CPU. by Dennis930 » Fri Jul 30, 2010 1:56 am. There is a recall on us crankps and they sell a wiring harness kit with it. 0l Duratec) and built the whole vehicle wiring harness from scratch. I have a couple questions I have some resistors to be able to run TFI as well as the ms3x card so I can easily run my PWM IAC and my A/C. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 99. 0 Hardware Guide.