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Discussion Starter · #1 ·
New Autowire harness. Tail lights work, directional signals work. Neither works when both are on. Anyone run into that before?
 

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Discussion Starter · #2 ·
Think I found the problem

Appears to be bad ground. Tail light housing was grounded just enough to work for one light, add a second and it fails. Had only loosely tightened bolt to tail light housing while I was working on it. Needed to be bolted tight.
 
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