3.4 wiring harness compatibility
03-15-2009, 06:34 PM
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3.4 wiring harness compatibility
Are the "early" 3.4 harnesses compatible w/ later 3.4's? I'm hunting down a 95.5 harness and ecu (5spd) I have also found a 99 or 00 3.4 auto engine. Will all that work together? My brothers trying to help me save my4rnr by helping me swap in a 3.4 so here is my start
03-16-2009, 03:31 PM
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I think that the Belize Off Road Team is correct. The first harness I tried to use was from a 97 T100 3.4 but was a 2wd unit and wouldn't work. The next harness I got was from a 98 T100 and it had a number of different plugs on it. I had to switch some of the sensors and the throttle body off a newer motor.
03-16-2009, 06:14 PM
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Thanks for the info. I will continue to try to find a full swap from the same vehicle instead of trying to piece things together. Sounds easier that way.
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