TheSundownFire Posted December 10, 2009 Report Share Posted December 10, 2009 As far as I know the only HUs that have problems with the bad grounds on the RCAs are Pioneers since they use a diode on the ground. If he has a Pioneer head, thats the problem. My car used to do the same thing. Wrap some bare uninsulated wire around the RCAs on the back of the head and use one of the screws to ground them. Problem solved. Quote 1999 Pontiac Sunfire Alpine CDA-9886 Sundown Audio SAZ-1000D Sundown Audio SAX-50.4 Rainbow SAC 265.25 Components Image Dynamics iD12 Optima Yellow Top SQFire FTW. Link to comment Share on other sites More sharing options...
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