Banebadboo

Thanks for the suggestion. A little info on the restoration/mod. As I said the truck is an 88 but I'm using the engine, transmission and transfer case from a 93 Jeep Cherokee XJ plus the entire wiring harness(modified for a Comanche). The truck has lots of other mods such as upgraded the doors to a 97 Cherokee XJ, using the power seats from a 2001 Grand Cherokee. We are going to using this truck to pull our travel trailer when we retire. Here's a link to the build if anyone's interested.

I didn't think the grounds would cause my issue, I have seen a lot of weird issues due to grounding so thought I would ask.

Hello all, I'm doing a restoration/mod to a 1988 Jeep Comanche, I'm using the wiring harness from a 1993 Jeep XJ. I was in the process of finishing the engine bay assembly and wanted to do some testing of my wiring. I have been testing as I went but this was the first time applying power with everything in the engine bay and cab hooked up. I found that I had a short at the positive battery cable. I have been able to trace the issue to the headlight switch after pulling the fuse (#11 Headlamp Delay Module, Horns, Security Alarm) the short stopped however, if I pulled the headlight switch on the short returns. I have not finished connecting the front headlight wiring harness it's installed but not connected, the rear light harness is not installed yet I just have wires pulled to the back. Could not having all the grounds in that part of the harness cause my issue or do you think it's more likely to be a bad(new) light switch or wiring issue that the switch? I hate opening the dash, it went in perfect. Any thoughts or ideas? Thanks