bigblewwho Posted June 23, 2008 Report Share Posted June 23, 2008 The wiring harness from the Magnum does not have ACC, so it appears I have to run an ACC line from the harness/AVIC to the car. But, according to my wiring diagrams, the ACC is a negative polarity from my wiring harness. If I tap this line and connect to the ACC on the AVIC, will this screw it up? It's a negative polarity to positive, correct? Help, I'm having brain fart! Quote Link to post Share on other sites
Someguy Posted July 6, 2008 Report Share Posted July 6, 2008 just tap it off the cig. lighter. it is an ignition switched 12v+ source. Quote Link to post Share on other sites
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