[John M Beard]

The TJ Unlimited, LJ, has been an expensive hobby. Initially there was some serious overheating, which we finally corrected by cutting the inner fenders and installing adequate ventilation. Air in , air out makes for a happy LS conversion.
Then the inevitable began to happen, the lack of attention to detail, and the electrical system was showing signs of bad grounds resulting in two field repairs.
The photos show what I initially uncovered when I opened up the center console.

more to follow….

 

[inline6]

ouch, I see issues I am trying to not get into on my build. I am replacing all the wiring with new stuff across the board.

Looks like they just covered up the wires with the genright center console. That and just spliced a bunch of things together.

 

[Wildrat]

Wow, I hope this is not your work.

 

[John M Beard]

Wow, I hope this is not your work.

No, not my work, I get to do corrections for work I paid to have done…

 

[Wildrat]

No, not my work, I get to do corrections for work I paid to have done…

Yep, it's going to be a bit of work checking everything that was done. Grounding to the body is shoddy. Grounding won't be hard to sort out. That bird nest of wiring will be fun to neaten.

 

[FLLJ]

ouch, I see issues I am trying to not get into on my build. I am replacing all the wiring with new stuff across the board.

Looks like they just covered up the wires with the genright center console. That and just spliced a bunch of things together.

I was going to warn him not to let you see this post.
First thing I thought of was how different your build is going to be.

 

[Wildrat]

The TJ Unlimited, LJ, has been an expensive hobby. Initially there was some serious overheating, which we finally corrected by cutting the inner fenders and installing adequate ventilation. Air in , air out makes for a happy LS conversion.
Then the inevitable began to happen, the lack of attention to detail, and the electrical system was showing signs of bad grounds resulting in two field repairs.
The photos show what I initially uncovered when I opened up the center console.

more to follow….
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I looked at this again. Is this really the wire job they did for the swap, or are you messing with us?

 

[Mouse]

Wow is all I have to say. People can hide wiring thats messy, but done incoorectly causes all sorts of headaches. I spent many hours fixing the wiring in my 1982 CJ-8 scrambler. Its safe and operational now, but not pretty.

 

[johncanfield]

......Then the inevitable began to happen, the lack of attention to detail, and the electrical system was showing signs of bad grounds resulting in two field repairs.
The photos show what I initially uncovered when I opened up the center console.

A high school shop class would have done a better wiring job - what a total mess. Shame on them.

 

[inline6]

It could be that they didn't shorten any harnesses that came with any of the accessories and just jammed the wires in the console. Technically not incorrect, but not the cleanest solution. The smashed wires, not good, grounds not good. There are 2 grounds to be careful of on a vehicle; chassis ground and sensor ground. They are not the same, ground them wrong/together and you can have issues that are hard to chase down.

Basically the ECU has a sensor ground output for the sensors, that should not be connected to chassis ground. It can cause a variation in the expected answers for the ECU if the grounds "float" for lack of a better term. That is the first thing I would go after. Make sure the neg battery post is connected to the block, then all the other grounds there. Star the grounds to that point. The sensor grounds are not to be connected to the chassis ground, only back to the ECU ground. A simple check with a meter will tell you if the sensors grounds are connected to the chassis ground.

The sensor grounds floating can cause irregular engine performance. The injectors look for a 5v square wave to trigger as I recall. If the sensor ground floats, then that 5V reference floats and never goes back to zero. Then the engine runs funny, might only happen at high PRM or heavy load...

just some of the things I am trying to pay attention to on my build.

 

[John M Beard]

I looked at this again. Is this really the wire job they did for the swap, or are you messing with us?

That is the wiring job I received from the LS swap down to the last rotten splice.

 

[Wildrat]

That is the wiring job I received from the LS swap down to the last rotten splice.

I feel for ya. You'll sort it out. Once you get started, it'll all come together.

 

[Elwarpo]

I guess I was lucky, wiring from my V* swap was well done... Now some of the stock wiring was shoddy.

 

[elff]

Yikes

Just get in there with a chainsaw and start over
Might be easier