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Evo 8 wiring harness diagram?

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Old Apr 29, 2016, 05:15 PM
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Evo 8 wiring harness diagram?
Does anyone have a wiring diagram for the evo 8 harness? I just bought a evo 8 and this wiring harness is a mess. I found where most of the plugs go however there are a couple that I am trying to figure out.

Thanks in advance!

2 wires in particular I am looking for.
-Power steering (Blue wire)
-AC compressor plug (circle plug)
Last edited by 05EV08; Apr 29, 2016 at 05:39 PM.
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Old Apr 29, 2016, 10:01 PM
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http://evoscan.com/manuals/Evo8USDMWiringDiagrams.rar
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Old Apr 29, 2016, 10:48 PM
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Originally Posted by Biggiesacks
I have this already, however it doesn't show me what each individual colored wire is.

For example (See attached picture)

These wires are cut. I know they are for the injector plugs however I don't know which wire goes on what side of the clip.
Attached Thumbnails Evo 8 wiring harness diagram?-img_5137.jpg  
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Old Apr 30, 2016, 09:09 AM
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the red and white on injector 2 is positive as well as the green on injector 3. the red on injector 4 is positive and orange is positive on 1. look at the positive on the other clips that I just described and see what side of the clip they go in
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Old Apr 30, 2016, 10:37 AM
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Originally Posted by ISPEVO8
the red and white on injector 2 is positive as well as the green on injector 3. the red on injector 4 is positive and orange is positive on 1. look at the positive on the other clips that I just described and see what side of the clip they go in
Thank you!

Anyone know what this is for? (Attached pic)
Attached Thumbnails Evo 8 wiring harness diagram?-img_5129.jpg  
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Old Apr 30, 2016, 10:38 AM
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that plug is for your fan motor should be another small one with it I believe
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Old Apr 30, 2016, 10:44 AM
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Originally Posted by ISPEVO8
that plug is for your fan motor should be another small one with it I believe
Yeah the car didn't come with OEM fans. It was wired right to the top of the fuse box with a relay hanging and all this ghetto crap. I'm fixing it all and doing it the right way. I need a OEM fan with the plug but it looks like everyone that has OEM fans have the wires cut. :/

Any idea what these 2 are?

Obviously one is power steering and the other is AC compressor but I can't find what plugs into them.
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Old Apr 30, 2016, 11:06 AM
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the top one is for power steering what it does is when you turn full left or full right it tells the ecu to raise the rpm of the motor. the bottom plug is for A/C power
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Old Apr 30, 2016, 11:19 AM
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Originally Posted by ISPEVO8
the top one is for power steering what it does is when you turn full left or full right it tells the ecu to raise the rpm of the motor. the bottom plug is for A/C power
Yeah I figured that much. I just don't know what actually plugs into them. Do the plugs come off the main harness or the fender harness?
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Old Apr 30, 2016, 11:22 AM
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they come off the main harness it wraps over the valve cover the front o2 connector comes from the same spot
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Old Apr 30, 2016, 11:23 AM
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Originally Posted by ISPEVO8
they come off the main harness it wraps over the valve cover the front o2 connector comes from the same spot
damn I cannot find them at all. They might of been cut
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Old Apr 30, 2016, 11:25 AM
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they both come off of the fender harness, the two plugs coming from the valve cover should be the crank angle sensor and the front o2 sensor
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Old Apr 30, 2016, 11:26 AM
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only way to tell for sure is to pull the harness apart and look for cut wires but even then you wont have the plugs. hate to say it but you might want to get a new harness if this much is missing from it
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Old Apr 30, 2016, 11:27 AM
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Originally Posted by Biggiesacks
they both come off of the fender harness, the two plugs coming from the valve cover should be the crank angle sensor and the front o2 sensor
That's what I thought. Sweet. That's good news cause I know where they are however they are both cut... lol

Does anyone know what color the wires are so I can figure out which one goes where as mine dont have connectors on it anymore.

I wonder who the previous owner was that did this...
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Old Apr 30, 2016, 11:33 AM
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who ever had your previous owner was prolly had everything deleted and did a wire tuck.


I hope this helps
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