When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm planning on replacing the fragile wiring harness in my 92. Is there a difference in harnesses between manual and automatic transmission candidates?
I have alot of wiring diagrams but I haven't seen enough evidence to know for sure.
I am more familiar with the previous generation of trucks but they are similar in ways. For the most part, and automatic truck will not have a Starter Relay. The automatics have a control box under the shifter cover. Just with my experience, I would stay with the wiring your truck came with unless you really understand wiring diagrams and can wire it to work.
The manual and auto use two different ECU's and harnesses. The only way to get it to work would be to re-pin the ECU plugs in the proper order, and add any missing wiring.
... I would stay with the wiring your truck came with unless you really understand wiring diagrams and can wire it to work.
THIS^^^
Getting a harness, unless it's brand-new would just give you headaches, maybe different from what you're having now.
I recommend that you just thoroughly inspect your stock harness for chafed insulation, corroded crimps, etc. Felllow members can help with locations of those crimps.
I've probably seen 15 trucks with my year and engine/trans specs and none of them use my specific ECU.
As was suggested above, I am hedging now because I will have this truck until I am dead. I want every part I can imagine as backup.
Can I acquire a wire harness with ECU out of a truck that doesn't match my current ECU and harness but has the same engine/trans/accessories? Will it work? I understand that there are different wiring concerns under the hood.
Thanks in advance.
/\\/\/\ Went to Toy Connection in Santa Clara this morning and this guy has it all if you are looking for parts /\/\/\/\
Remember that even the harnesses and accessories changed during the various years! My 4runner had a motor from a 92 in it, but on the factory wiring harness it used an plug for the alternator that toyota said they didn't start using until 94. So, be aware.
personally, easier and cheaper to invest in bulk wiring and do repairs to the factory harness as needed.
From my experience, each harness will vary just due to which option you have such as with or without cruise control, rear heater, ect... To get the exact harness, you need to find out the part number from your main harness. You will need to remove your cluster gauge to get access to the harness part number. It will be above the steering column. your other harness will have a tag with a part number on it. Here is what the tag will look like. If you can find a main harness with exact number as yours, the others harness part number will be sure to match such as Injector Harness, Tail light harness,
As far as the ECU I think the difference will be if it is an Automatic or Manual transmission and if it is a 22 or a 3.0,
Terry, An easier to access tag is located in the left hand kick panel is that part of the body harness?
Seems to me the engine harness is the most deteriorated, the others are less fragile.
Dont forget in 92 there were vehicles supplied from the California assembly plant as well as from Japan. Also you need to match the build batch (production date) which would account for a lot of variation in part numbers.
Remember that even the harnesses and accessories changed during the various years! My 4runner had a motor from a 92 in it, but on the factory wiring harness it used an plug for the alternator that toyota said they didn't start using until 94. So, be aware.
personally, easier and cheaper to invest in bulk wiring and do repairs to the factory harness as needed.
I'm not an electrical novice. Not even an amateur. Been 32 years since I built a car (1973 Cuda - 1/2" cam, A/T conversion to Pistol Grip 4spd,, 3,000lb pressure plate, stainless linkage so it wouldn't bend, scattershield, blah blah blah).
But I have been mulling the idea of building my own harness since I started this rebuild. I have every tool known to mankind at my disposal but I'm trying to not become a T4R electrical genius if I can help it, you know? lol
Oh well ... all I know is that wyoming has been coaxing me to just shut up and fix it since the first post I made, but I'm too old to worry about wiring and want to have this truck brand new when I am actually done.
Once i create the form board for the harness, I will display it.
The manual and auto use two different ECU's and harnesses. The only way to get it to work would be to re-pin the ECU plugs in the proper order, and add any missing wiring.
Something not right about this diagram.
Mine is 1992 V6 5speed and I have the "4WD A/T" harness and ECU (26-16-22).
Zoinks!
But I found a replacement and am planning on doing a few things:
1. Replicate it. That's right. I will see how it goes but if I can find a source for connectors, I will be reproducing harnesses for Gen 1/2/3. Along way from that but I'm studying it.
2. Toy Connection. This guy is a source for everything.
3. I'll be replacing every relay and/or module with new when I do the switch.
12-27-2016, 07:40 PM
