Well its all working except my dash voltage meter drops to nothing after driving for a few mins. New to trying electrical fixes what do i do to test or find out my problem again alternator and batt are working just the dash drops off and my check gauge light comes on . I do have a sub and amp hooked up but again starts n runs fine. Just downgraded to a smaller sub n amp too so that shouldnt be the issue

 

have the system tested most auto place do it for free