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  1. GMRC-01 Wiring Harness Issues

    General Car Audio Discussion
    I am installing a new head unit in my 2002 pontiac grand am, it has the monsoon sound system so it hasn't been exactly the easiest install. I have bought and wired up my Metra GMRC-01 wiring harness with my aftermarket head unit wiring harness. I used crimp connectors on all my wires to ensure a...
  2. Engine/alt whine when headunit is off and car running

    General Car Audio Discussion
    Lots of research and I can't find any ideas-might just be obsessing. Installed a new Clarion 702 with PPI i520.4 (under front passenger seat.) Grounded headunit to eliminate minor static in speakers. Amp grounded to same location as OEM amp but I sanded down to bare metal-was painted.)...
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