Wire - Hot, Hot, Not

[Davide]

I am looking for a wire that is

1) hot with key on
2) hot during cranking
3) goes off when the ignition is turned off

If you know the number or color that would be a great place for me to start. Otherwise I will just have to get under the dash and do it the old fashioned way. Yes, I admit this post is me just being lazy

 

[bigwalton]

You want a hot start/run wire.

In the engine bay or under the dash? In the engine bay, there's a fat (~10 ga IIRC) red wire with a white tracer coming out of the bulkhead that I used for the HEI and now to feed the ASD relay in the 4.0 PDC (how's that for some acronyms?!) It's easy to find because it's about the biggest wire in the engine bay.

 

[scott anderson]

You want a hot start/run wire.

In (how's that for some acronyms?!) .

I thought i was going to have to break out Army Regulation 310-50 "authorized abbreviations and brevity codes"..lol

 

[bigwalton]

I thought i was going to have to break out Army Regulation 310-50 "authorized abbreviations and brevity codes"..lol

Don't forget, I worked for the Navy as an engineer for 5 years... I can throw out alphabet soup with the best of them.

 

[Davide]

OK...I will tell you why I asked.

I thought I had found the right wire two days ago. Not difficult to test. I was playing around, and the issue was that once started, the car wouldn't stop. I figured I must have the wrong wire. It was the ONLY explanation I could come up with.

I had found the right one (that fat red one you pointed out). The issue was the key. I had to turn it off with some force for the vehicle to quit!

Thanks for the info.

 

[bigwalton]

I know there's adjustment in the ignition switch, probably a PITA to actually do though. That might be the issue.

 

[jscherb]

I am looking for a wire that is

1) hot with key on
2) hot during cranking
3) goes off when the ignition is turned off

If you know the number or color that would be a great place for me to start. Otherwise I will just have to get under the dash and do it the old fashioned way. Yes, I admit this post is me just being lazy

If you look at the CJ wiring diagram, what you want is called the IGN/LPS circuit. I believe there's a red wire from the fuse block to the speedo cluster that carries this circuit, I think it powers the fuel gauge, oil pressure gauge and 4WD indicator lamp.