What gets grounded only on start up?

T&A-XJ · Sep 25, 2005

When the key is in the start position what gets a ground signal? Then in the run position it does not. This is on a 90 XJ what I am swapping in a 96 column. This is the only differance beween the wiring I havent figured out yet aside from the cruise.

Would think that in the start it only needs the starter trigger and ignition. My next step is to leave it open and see if it works but if not Im thinking maybe this ground can be constantly grounded but dont want to mess it up yet, without asking around first. The wire guage is thin maybe 18-20Ga

Thanks

8Mud · Sep 26, 2005

Think it´s for the warning or trouble lights, like the brake and maybe the check engine light. Not certain though.

langer1 · Sep 26, 2005

T&A-XJ said:
When the key is in the start position what gets a ground signal? Then in the run position it does not. This is on a 90 XJ what I am swapping in a 96 column. This is the only differance beween the wiring I havent figured out yet aside from the cruise.

Would think that in the start it only needs the starter trigger and ignition. My next step is to leave it open and see if it works but if not Im thinking maybe this ground can be constantly grounded but dont want to mess it up yet, without asking around first. The wire guage is thin maybe 18-20Ga

Thanks

When looking at the ignition switch I don't see anything that gets grounded.
Anything that needs grounded is done by the ECU, accept the horn.

Lou · Sep 26, 2005

8Mud said:
Think it´s for the warning or trouble lights, like the brake and maybe the check engine light. Not certain though.

What Mud said -- especially if it's a GY/WT or/and VT/YL wire(s)

T&A-XJ · Sep 27, 2005

Im thinking the same thing but if all else fails I will hook up a relay to connect the ground and be done with it.

What gets grounded only on start up?

T&A-XJ

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8Mud

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langer1

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Lou

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T&A-XJ

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