Wiring diagram for Installing new wiring harness in ‘72 FJ40 with Chevy 350? (1 Viewer)

[tlovvorn]

I’m restoring a 1972 FJ40 with my son and the old wiring harness was like a rat’s nest with the previous owner taking a lot of short cuts. We put in a new wiring harness from JT Outfitters today and have all of the wires run but unfortunately did not take enough pictures of how the ignition group was wired to the Chevy 350 and now am guessing as to how to get everything wired correctly. Does anyone know of a diagram that shows how to correctly connect the JT Outfitters harness to the Chevy 350?

Thanks in advance! New to the forum and my first post...although I have been reading a good bit.

 

[FJ40RobQ]

I’m restoring a 1972 FJ40 with my son and the old wiring harness was like a rat’s nest with the previous owner taking a lot of short cuts. We put in a new wiring harness from JT Outfitters today and have all of the wires run but unfortunately did not take enough pictures of how the ignition group was wired to the Chevy 350 and now am guessing as to how to get everything wired correctly. Does anyone know of a diagram that shows how to correctly connect the JT Outfitters harness to the Chevy 350?

Thanks in advance! New to the forum and my first post...although I have been reading a good bit.

 

[FJ40RobQ]

Hi,
It’s been a while since I did mine. I don’t have the JT outfitters one but it looks very similar to the Painless wiring that I installed. I was able to make it work fine through a lot of trial and error. Biggest lesson I had was to make sure I had a ground for all the lighting. Also ground for battery is from the engine, but others have it from the chassis. When I get a chance I will take pictures. Also know that I’m still using original Toyota alternator.
Good Luck!
RobQ

 

[Downey]

Birmingham, send me a snail mail address and I'll send you a freebie Downey Off Road Mfg. V8 installation instruction manual that shows/tells about the V8 wiring.

 

[559Fj40]

I do not have specific info for the JT outfitters harness as I just used an EZ Wire for my FJ 40 with a 350. I can post up the notes and drawings I made for my EZ Harness a little later today too when I get my hands on it. I kept track of what wire does what off of the factory column/ignition plug and tied that into my EZ Harness. It was fairly straight forward once I figured out which wire did what off of the key.

 

[reddingcruiser]

Birmingham, send me a snail mail address and I'll send you a freebie Downey Off Road Mfg. V8 installation instruction manual that shows/tells about the V8 wiring.

I just found two old copies of the instruction manual from back in the day. Prized possessions .

 

[Dynosoar]

B-Y to + side of coil
B-W to Starter
Y-G to coolant sender (you have to use Toyota sender on the Chevy engine)
Y-B to oil press sender

You are done (except alternator)

Dyno

 

[tlovvorn]

Hi,
It’s been a while since I did mine. I don’t have the JT outfitters one but it looks very similar to the Painless wiring that I installed. I was able to make it work fine through a lot of trial and error. Biggest lesson I had was to make sure I had a ground for all the lighting. Also ground for battery is from the engine, but others have it from the chassis. When I get a chance I will take pictures. Also know that I’m still using original Toyota alternator.
Good Luck!
RobQ

Thank you!

 

[tlovvorn]

B-Y to + side of coil
B-W to Starter
Y-G to coolant sender (you have to use Toyota sender on the Chevy engine)
Y-B to oil press sender

You are done (except alternator)

Dyno

Thanks Dyno!

 

[tramenofj40]

Birmingham, send me a snail mail address and I'll send you a freebie Downey Off Road Mfg. V8 installation instruction manual that shows/tells about the V8 wiring.

Hey jim can i get this wiring diagram, I just installed my EFI and I think this is the next step. Thank you

 

[B y r o n]

Check out post #7 in this thread.

 

[Downey]

Hey jim can i get this wiring diagram, I just installed my EFI and I think this is the next step. Thank you

Send snail mail address, file too large/slow for electronic transfer (whole manual)

 

[tramenofj40]

Send snail mail address, file too large/slow for electronic transfer (whole manual)

Can I have your Venmo or Zelle , also how much for the manual? Thanks

 

[Vandal FJ]

I have a Jan 1972 w/350... something you need to know is that the 1972 wiring schematic is only applicable for Sept 1972 and on models. Anything prior to Sept will use a 1971 schematic. Hope that helps.

 

[tramenofj40]

I have a Jan 1972 w/350... something you need to know is that the 1972 wiring schematic is only applicable for Sept 1972 and on models. Anything prior to Sept will use a 1971 schematic. Hope that helps.

I have a 74 with 350 5.7 with efi install if you can send me some photos , I’m a visual learner also gal doing this on her own . So I want to make sure I’m doing it right and not over spending with a million ways to do it on YouTube . Thank you in advance

 

[Downey]

Can I have your Venmo or Zelle , also how much for the manual? Thanks

Freebie, just sent mailing address- - -easy deal.

 

[tramenofj40]

Freebie, just sent mailing address- - -easy deal.

Thank you sooo much 7011 Lennox ave #123
Van Nuys ca 91405

 

[pjohnson]

Thank you sooo much .....................

Best to send personal info via Private Message. Hover over his username and click 'Start Conversation'
Then come back and edit this post to remove your info.

 

[tramenofj40]

Best to send personal info via Private Message. Hover over his username and click 'Start Conversation'
Then come back and edit this post to remove your info.

Thank you