Wiring harness help ?

[fonz87]

Hey guys, just need to know if anyone has a wiring harness write up on how to remove it and install it ?
I just bought a car with a small engine fire which started at the coil pack and brunt someone of the wiring harness im guessing and i want to replace it. I will try to post pics of the engine bay.

 

[87CandyBlueT]

Remove glove box etc. disconnect all conectors back there to make it easy. Raise hood, go to exhaust side on firewall look at where the harness enters take a screwdriver and pop it loose, pull the harness through. Now by the thermostat housing start disconnecting all the connectors, don't forget the lower ones by the coolant hose. Tug them lightly and follow the route to the connector. Once you have all on them disconnected on that side move the harness on top of the valve covers, now raise the vehicle and disconnect 3 connectors/sensors from the transmission now go to the intake side of engine bay and pull the transmission end harness up or you could disconnect it and leave the speed sensor etc. there. Then disconnect all connectors on intake side, then open the plastic wire holder at top of timing cover and remove the harness. You should be good here.

Hint it is easier if you remove the accordian hose, and upper intake.

I know I just rambled but thats basically it man. There are only like 2 or 3 like connectors so re-install is pretty easy too. GL man

 

[fonz87]

well see, if i show you the pics tomorrow, well alot of it... is....lets say, burned. I show you the pics tomorrow. Im hoping to replace the wiring harness first, thats my biggest challenge for my project.
Thanks for your help.
If there is anyone in IL thats close to me and want to help me remove this, that would be AWESOME!
thanks

 

[87CandyBlueT]

No problem bro, if I were close I would help ya. The most difficult connectors for me were the one closest to the timing belt under the intake manifold on the side I actually removed the upper intake for this connector. Chances are your wiring harness may need to be replaced it is burnt and/or connectors are broken/missing (don't be suprised to find this) The wires get real brittle with age, my harness was intact when removed, but I had earlier soldered my CPS wires together.

I wish you luck just remember those tranny connections I know you can disconnect the speed sensor from near where the starter is located but not sure about other connectors. One of them is on top of the transmission and sucks to undo. That is about all I can recall. My wife and I in the dark with a flashlight pulled ours in under 30 mins.

 

[figgie]

First off,

which wiring harness are you referring to?

The engine harness or the main electrical harness?

The engine harness is cake.

The main electrical harness. No cakes, muffin or any other goodies there. It is more like a rats nest combined with a jigsaw puzzle but it is sheer genius!

 

[fonz87]

I will take alot of pics and post it here today if i find my camera. I m pretty sure it's my wiring harness. Ill let you guys decide.
Thanks for the help guys

 

[figgie]

Sounds like the engine harness.


That one is easy enough.

87CandyBlueT basically gave you a step by step for that one.

 

[fonz87]

yea, I m ganna try that. It's easy for people who has done it before but im new to this and any help would help me alot. If anyone here from IL that can help me remove this and install another one. i will pay them with beer or maybe money ??
thanks guys

 

[thejrman]

i have installed and pulled the motor harness from my car about 4 times it is really really easy and this is the first supra o have ever owned or messed with but when i get my new harness i might have to do a right up if i fell up to it

 

[fonz87]

anyone have a pic of the wiring harness itself ?? I would like to see how it looks like ?
thanks

 

[Quin]

Get in there and do it dude. It's not bad at all, in daylight (and if you can get the ones on the intake side off without removing anything) it shouldn't take much more than 10 or 15 minutes.

Pretty sure it took less time to disconnect my harness than it did to swap my a belt in the cold lol

Pics here: http://www.supramania.com/forums/showpost.php?p=1065053&postcount=65

 

[CaptMKIII]

Let's see some pictures of the beast I found you Fonz...

 

[fonz87]

Alright guys, this is how my engine bay looks like, the harness that burned in the fire.

http://www.supramania.com/forums/showthread.php?p=1072389&posted=1#post1072389

Project starts guys

 

[fonz87]

will auto turbo wiring harness work with 5 speed turbo motor ??

 

[MrClean]

sooooo im guessing that after you ordered all those parts yesterday, the wiring harness is the only thing left to get?

....and possibly the IC pipes also??? but those can be taken care of in 3 seconds sooooo like i said. only the wiring harness?

 

[ForcedTorque]

will auto turbo wiring harness work with 5 speed turbo motor ??

Yes, you can use an automatic. Be careful what harness you get though, it's easy to have a plug or two that don't match. You want to find one that matched the plugs near the ECU. I've swapped the harnesses in mine 3 times. It's not a hard job at all to swap it. Most plugs only fit in one place. I don't know if it was ever mentioned in the other thread, but you also have some body harness plugs burned as well. The passenger side fender well is where I saw it. Your TEMS plug, Fuel relay, and maybe more have body harness plugs that the motor harness plugs into. Both plugs looked burned to me.

BTW.......I have a 90 harness for a 5-Speed, but the injector plugs are cut off for my 550's. I can replace them before selling it. I'd do $125 shipped for it