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I would start simple. Check the connections to the battery. make sure it's all clean and tight. Maybe your harness is affecting it somehow. I hate electrical issues.


Agreed, start simple. I'd suspect grounds first. Check all of them and resurface where they connect to body/engine/battery etc... You can often find cheap ground kits at auto parts stores, so it might be just as easy to replace them?

Electrical gremlins are definitely <img src="/forums/images/graemlins/evil.gif" alt="" /> .

1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/