heartbeat1977 Posted May 27, 2007 Report Share Posted May 27, 2007 I just bought a AVH-P4900DVD and I got told by the salesman to regiter on this site to find how I can have a movie playing while driving. Hopefully this is enough information. Thanks for the help. Eric Quote Link to post Share on other sites
cntrylvr79 Posted May 27, 2007 Report Share Posted May 27, 2007 You need a toggle switch. One side of toggle switch goes to ground. The other side of toggle switch goes to green parking brake wire of 4900 harness. Turn switch on about 5 seconds after the unit itself turns on. Turn off switch when you turn off car. 1 bypassed 4900. Quote Link to post Share on other sites
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