So, I pulled my engine, trans, and transfer case.

ready to install my new motor, trans, and transfer case....


the new motor had its wiring harness cut, so.... i need a new one or swap over the one from my old engine.

i'd prefer to just get a new harness, but am having a little bit of an issue finding the right harness. there are so many codes out there... not sure what's what...

here's the code off of my old harness - 82121-3G290B

my 4runner is a 99 that was build in 01/99... it's a 4wd auto... can anyone tell me if any harness between 95-99 3.4L V6 auto 4wd would work?

thanks!

 

Match the harness codes. Not all 3.4 harnesses are the same plugs, 97 for example.

Use VIN at dealer and get code for harness then order off EBay etc.

:wabbit2:

 

82121-3G290B is the code that's on my harness...

can't seem to find anything on ebay. did a search on google and a new one is $400 some dollars.

why are there so many different versions with the same drivetrain setup?

 

Auto harness about $1100.
Manual harness like $400.

I got a new manual harness for under $300.

:wabbit2:

 

swap it so it is same! so easy too just remove upper and lower plenum and bam the injector plugs are right there...

 

I replaced my 3.4 with an auto one, and kept my manual harness in the engine bay. It was easy enough. If the plugs are different couldn't you just swap with the parts off the old motor? All my plugs were the same. Oh, don't forget the engine temp sensor for the dash gauge, it's really hard to get in the back of the motor by the fire wall. I had to do it like a blind man.

 

Where do I find a wiring harness for 98 3.4 m/t 4x4 for under 300 dollars?