Merging front bj60 harness with rear FJ60 harness

[eknomf]

One of the last items oustanding on my 3b swap is hooking up the rear wiring harness. I do not have a good electrical understanding (yet, I am sure when I am done I will be an expert..) and this has stumped me a bit.

I have put the harness and drivetrain out of a 84 bj60 into a us 85 fj60. The 2 plugs at the rear harness connection are different, and the number of of wires do not match (even considering the diesel sedimenter) . I have pdfs of the FSMs for both trucks, but have been unable to decipher the color coding due to a few wires with the same color scheme and low quality pdfs where I cant read the color coding on the wiring diagrams.

I would just swap in the rear harness, but the bj60 one is wrecked due corrosion.

I want to cut the ends off the front fj60 harness (not used) and the rear bj60 harness (not used) to make a short adapter cable. I just need to identify what wire does what...

Does anyone have a readable copy of either wiring diagram for these 2 models and years?

Is there a way to trace what wires do what with a multimeter/testlight/etc?

I know I could figure this out by pulling out both rear harnesses and comparing/merging them, but I would like to avoid this if possible.

 

[bj40green]

Send me a EM or PM with your e-mail address and I'll send you 6 pics with the wiring diagram. Each pic is +/- 700Kb.
It's FJ/BJ mixed diagram. It's up to you to figure out what is relevant for your truck. Sounds difficult but when you see it, it's easy to work with.

Rudi

 

[chimo]

Hi BJ40green, i've changes my 2f engine for a 3B and would like to see these diagrams if you still have them.

my email is luc@espressosports.net

 

[Cruising Canuck]

I swapped a 3b into a fj60, I just swapped the entire harness. Why would you splice it? It wasn't that difficult at all, I remember doing it in an evening with my dad

 

[georgebj60]

I swapped a 3b into a fj60, I just swapped the entire harness. Why would you splice it? It wasn't that difficult at all, I remember doing it in an evening with my dad

Because the OP said:

I would just swap in the rear harness, but the bj60 one is wrecked due corrosion.

 

[eknomf]

I ended up cutting the harnesses and directly splicing it near the driver's rocker panel. It took a few evenings for me to figure out as a number of the wire colors didn't match, but ended up working fine.