anyone take apart a engine harness??
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From: Woodbridge, VA
anyone take apart a engine harness??
CAR WONT START!
well one of my wires (think its the ground off the cam sensor near upper rad hose) burnt up because it was resting on the hard pipe causing it to short out the other power wires that was touching this ground wire... hard to tell what wires they were since its down to the copper and all stuck together
did my best to try and trace where each went but the wires were kinda falling apart
anywho im trying to redo the harness and needed help if someone has taken a apart a engine harness or has a diagram to the engine harness.. pics or spare harness would help at this point ..
ill post pics up in a little bit of the mess
things ive done to TRY and START the car
-took apart the factory engine harness and inspected all the wires (removed factory tape and loom)
-fixed and replaced all the burnt and wires (soldered and heat shrunk)
- replaced the cam sensor
-checked all fuses inside and engine bay
-replaced the interior fuse #1 ignition coil (just incase)
-replaced with new spark plugs with .024 gap
-swapped over coil packs with a buddies working sparktech COP
------
this is the black "ground" wire that was touching my upper rad pipe



burn a couple of other wires (including cam sensor harness and coil pack power wire)

the mess taking everything off and apart
well one of my wires (think its the ground off the cam sensor near upper rad hose) burnt up because it was resting on the hard pipe causing it to short out the other power wires that was touching this ground wire... hard to tell what wires they were since its down to the copper and all stuck together
did my best to try and trace where each went but the wires were kinda falling apartanywho im trying to redo the harness and needed help if someone has taken a apart a engine harness or has a diagram to the engine harness.. pics or spare harness would help at this point ..
ill post pics up in a little bit of the mess
things ive done to TRY and START the car
-took apart the factory engine harness and inspected all the wires (removed factory tape and loom)
-fixed and replaced all the burnt and wires (soldered and heat shrunk)
- replaced the cam sensor
-checked all fuses inside and engine bay
-replaced the interior fuse #1 ignition coil (just incase)
-replaced with new spark plugs with .024 gap
-swapped over coil packs with a buddies working sparktech COP
------
this is the black "ground" wire that was touching my upper rad pipe



burn a couple of other wires (including cam sensor harness and coil pack power wire)

the mess taking everything off and apart
Last edited by Darkn3s; Mar 22, 2011 at 12:28 PM.
No one seems to have posted this before i dont know why
Complete Wiring Diagram
isnt there a diagram behind the ECU cover. im pretty sure ive seen a wire color/sensor type deal around there.
Complete Wiring Diagram
isnt there a diagram behind the ECU cover. im pretty sure ive seen a wire color/sensor type deal around there.
I have taken apart my harness, and de-pinned just about every connector there is in the engine bay to do a wire tuck. I stripped off ALL of the protective covers and tore it down right to the individual wires, so I am very familiar with the internal wires of the harness. I can help you with your issues if you would like me to, at the moment I am at work, but am around the car usually after 4:00pm till around 9:30pm when I am going to bed. (Get up at 4:30am
)
)
Thread Starter
Evolved Member
iTrader: (47)
Joined: Feb 2009
Posts: 592
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From: Woodbridge, VA
No one seems to have posted this before i dont know why
Complete Wiring Diagram
isnt there a diagram behind the ECU cover. im pretty sure ive seen a wire color/sensor type deal around there.
Complete Wiring Diagram
isnt there a diagram behind the ECU cover. im pretty sure ive seen a wire color/sensor type deal around there.
.. whhaa theres a ECU cover? lol my car didnt have one, soo double

I have taken apart my harness, and de-pinned just about every connector there is in the engine bay to do a wire tuck. I stripped off ALL of the protective covers and tore it down right to the individual wires, so I am very familiar with the internal wires of the harness. I can help you with your issues if you would like me to, at the moment I am at work, but am around the car usually after 4:00pm till around 9:30pm when I am going to bed. (Get up at 4:30am
)
)Trending Topics
Thread Starter
Evolved Member
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Joined: Feb 2009
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From: Woodbridge, VA
does anyone know what the black wire ring terminal near the cam sensor run to.. just need to make sure i wired it correct and straight to the chassis in front of driver strut
thats the way to do it
i've built an evo race harness for one of our cars, and i'll be making a couple more this summer. did the same thing, depinned everything. i even removed all the intermediate connections, and the fuse panels. only wires remaining were for the essential engine sensors 
as for the OP,
that black wire that grounds on the cam position sensor is a ground. you can touch it to anything metal in the engine bay and it will be fine. you can't "short" a ground by touching it to other grounds.
you can however, short it to a power, which the red wires are. somewhere in there the red touched the black and started melting things. oviously the short circuit ran down the black wire to where it was connected to the block (and that would be all the melted section). you need to follow the melted section to where it started and that is where your short is. replace wires from there to the terminals and you should be fine. double check with a ohmmeter that the power wire isn't shorted still before plugging the battery back in or giving the car power.
Keep in mind, once again if I remember correctly, there should be a wire running to ground under the thermostat housing as well. I don't remember what that ground was for though, I just remember I thought one was there..
Here is a small after picture of the finished engine bay..
thats the way to do it
i've built an evo race harness for one of our cars, and i'll be making a couple more this summer. did the same thing, depinned everything. i even removed all the intermediate connections, and the fuse panels. only wires remaining were for the essential engine sensors 
My gosh let me tell you, if I was to do it all over again, I would have bought another harness, and used the one in the car for all my measurements, modified the other on a bench, then just swapped the two.
I bet you saw all the dumb OEM Mitsu crap in your harnessess I did too. I never understood why they just didn't break out all the wires running to the manifold and throttle body straight from the firewall pass through. Instead, the injector harnesses are like 8 feet long when they could have been 1.5 feet long. All of my plugs going to the Manifold and T/B are broke out from there now, and no wires run across the top of the tranny to the block anymore. Eliminated two intermedate connectors, and a bunch of useless crap. Simplicity is such an underrated thing..
Man was that a pain physically, many hours spent bent over the front of the car poking around on the firewall. I almost thought of hanging myself from my engine picker with my belt to keep my back from hurting and having to bend over. Hahaha That would have been a funny sight!
Keep in mind, once again if I remember correctly, there should be a wire running to ground under the thermostat housing as well. I don't remember what that ground was for though, I just remember I thought one was there..
Here is a small after picture of the finished engine bay..
Here is a small after picture of the finished engine bay..


