RWD4G63
10+ Year Contributor
- 474
- 135
- Dec 7, 2011
-
Paw Paw,
Michigan
Hey guys! I'm going to be building a motorsports spec wiring harness for my 2G (with evo ECU), and I thought it would be nice to document the process for those of you that were curious or had questions. You may have seen this type of work referred to as "Mil-spec", but that is actually inaccurate, as motorsports harnesses are generally constructed to much more strict standards than military wiring. I'll be concentrically twisting this harness.
I'll be using a Link G4+ plug in ECU for an Evo IIIV. This has extra inputs and outputs for various components I'll be using. I'll eventually add this info to my build thread (which I haven't started yet) in a more straight forward form.
My first step was buying new ECU connectors and pins. I simply ordered them from Mouser.com after looking them up from the ECU connector wiki page (which needs some updating). I'm not sure why they're different colors, probably because I missed part of the part number that specifies them being yellow. Oh well, I don't care.
You can see the difference in the 18-22 awg pins and the 16-20 awg pins here. Only the A and D connectors use the 16-20awg pins.
All of the M22759 wire and Raychem DR-25 sheathing will get here today and I'll post an update later about how I determine what gauge wiring to use and how I build splices for branches of power and ground.
Components that will be included in the engine wiring side of things:
Four injectors
Four ignition coils
2GB cam angle sensor
Kiggly crank angle sensor
Intake air temp
Coolant temp (gauge cluster too)
Fuel pressure
Oil pressure
Coolant pressure
Back pressure (EMAP)
Flex fuel
Boost control solenoid
Fan trigger
Fuel pump trigger
Knock sensor
Turbo speed sensor
Bosch motorsports 68mm e-throttle
Can wideband
Tach output
Clutch Switch input
Speed sensor
Alternator
Star-earth grounding for all components
I think that's it but I'll update it if there are additional. Let me know if you have any questions!
I'll be using a Link G4+ plug in ECU for an Evo IIIV. This has extra inputs and outputs for various components I'll be using. I'll eventually add this info to my build thread (which I haven't started yet) in a more straight forward form.
My first step was buying new ECU connectors and pins. I simply ordered them from Mouser.com after looking them up from the ECU connector wiki page (which needs some updating). I'm not sure why they're different colors, probably because I missed part of the part number that specifies them being yellow. Oh well, I don't care.
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You can see the difference in the 18-22 awg pins and the 16-20 awg pins here. Only the A and D connectors use the 16-20awg pins.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
All of the M22759 wire and Raychem DR-25 sheathing will get here today and I'll post an update later about how I determine what gauge wiring to use and how I build splices for branches of power and ground.
Components that will be included in the engine wiring side of things:
Four injectors
Four ignition coils
2GB cam angle sensor
Kiggly crank angle sensor
Intake air temp
Coolant temp (gauge cluster too)
Fuel pressure
Oil pressure
Coolant pressure
Back pressure (EMAP)
Flex fuel
Boost control solenoid
Fan trigger
Fuel pump trigger
Knock sensor
Turbo speed sensor
Bosch motorsports 68mm e-throttle
Can wideband
Tach output
Clutch Switch input
Speed sensor
Alternator
Star-earth grounding for all components
I think that's it but I'll update it if there are additional. Let me know if you have any questions!
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