For those that are/have done the harness cleanup, I have some ??'s.
05 Truck. [Hummer] Transplanted into a 55 Chevy sedan.
1. Did you remove the wires from the PCM plugs, or just cut them off?
A. If removed, what did you use for weather plugs, in the empty slots?
B. What tool did you use to get the wire terminals to release?

2. There's a red box on the pos batt cable.[Batt monitor?. Has a 16 slot plug]. Did you eliminate this box, and all it's wires?
3. Will the fuel pump relay control work w/ an aftermkt hotwire relay, to allow for a "prime cycle"?
4. The 4L65 has a neutral sw on it. How do I go about using it? If I don't retain the purple wire [to starter] circuit, can it still be used?
Overall, if I'm doing an accurate count, I'll not have a lot of wires to remove from the 2 PCM connectors.

NE1 have a pinout list, that is marked up?
My A/C, start, all gauges, lighting, will be independently controlled.
I've got the harness peeled of all the wraps, and am ready to try to fit it to the car.
I'd like to put the PCM in the car, but lengthening all the wires would be a monumental task!!

Any/all suggestions welcomed!

 

I removed all my un-used wires and where they were pinned to on the Connectors. I got rid of some of the Connectors. They make a small Tool to remove them, I used a Paper Clip.

 

That's what I'm trying to do, by identifying the ones not needed. [There's 22 pink wires just in the thru firewall connector!]
I've got a hunch this is going to be a really $hitty job...I'm in it about 6 hrs, and still don't know WTF I'm doing...

 

Don't go taking stuff out if you aren't sure about waht you are doing - you are guaranteed to take out something essential

 

All the pinks are ignition wires, but they have to be fused, so you have to figure where they go. The first harness you do is hard after that they just take some time.
Call me later you have the number

 

Will do!
THANKS!

 

What pcm do you have? If its an E38 the two connectors are made by Molex.
One is 73 pins(black) and other is 80 (gray) To release terminals you need a release tool. Its about half diameter of apaper clip. A small drill bit might work.
You need to pry up gently on the mating part ofvthe connector to the release position. ~5mm. You then insert release tool in small hole and remove terminal.

 

Pocono Joe, I'm now movin rite along!
Wires are being traced, a log written of what goes, by pin #, and PCM plug.
It may not run, but this harness IS going on a diet!

 

take the colored part of the plugs off and use a small screw driver to release the pin, its easy. I did not plug my open holes in the connectors, I know I should have but didn't.

 

Got'r done!
Thanks all, for the help!

 

i have an 06 silverado with a LQ9/4L70E that i'm using for my swap.. how hard was it to make your harness work?... mine should be the same. i have no problem doing it myself but it seem's all the info is scattered and there is'nt realy a write up of how to do this you would figure someone would have done it by now.

i found this book on ebay.. did anyone use it before?..

http://cgi.ebay.com/ebaymotors/ws/eB...m=370094216418

 

The books not much good to you since he didn't cover DBW in it

 

wouldn't the only difference be the pedal and that sensor thingy?.. lol. i wish i could just put the nove body on the truck frame and be done with it!..

well if there is anyone that knows what i need to do then let me know.
thanks.

 

i have a lq4 that will be running behind a 4l60. how do i change the plug for the trany? do i just match up the wiring? also do i need the p/n switch. and im going to be running cable throttle body so i can just take out the dbw wires? how do i make the fan and fuel pump relays?