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<blockquote data-quote="daveyp225" data-source="post: 6053190" data-attributes="member: 568483">I just installed a Pioneer Preimer P680MP head unit into my 1995 Mustang GT. The care came with the stock Mach 460 with the factory amps.I purchased the following harness: <a href="http://www.crutchfield.com/p_120705510/Ford-Receiver-Wiring-Harness.html?search=ford+harness" target="_blank">http://www.crutchfield.com/p_120705510/Ford-Receiver-Wiring-Harness.html?search=ford+harness</a>After splicing the required wiress to the aftermarket head unit adapter it wouldn&#039;t power up. I had connected both the red ACC switch power and yellow constant power wires. Nothing...I put off putting wire nuts on, and the yellow and red spliced wires contacted, and the **** thing started to power up... Hmm, I thought to myself. I figured maybe either the red or yellow wire was not connected correctly. I tried yellow-&amp;gt;red, red-&amp;gt;yellow. Still didn&#039;t work...So I spliced the red AND yellow wire from the head unit to the incomming yellow, and it works!I felt like saying screw it, keep it that way... But I know somthing isn&#039;t right and it might cause me problems. What could be the issue here? My head unit is also getting very hot to the touch, and I can smell a bit of burning after its playing a CD for 5 minutes.</blockquote>

[QUOTE="daveyp225, post: 6053190, member: 568483"] I just installed a Pioneer Preimer P680MP head unit into my 1995 Mustang GT. The care came with the stock Mach 460 with the factory amps. I purchased the following harness: [URL="http://www.crutchfield.com/p_120705510/Ford-Receiver-Wiring-Harness.html?search=ford+harness"]http://www.crutchfield.com/p_120705510/Ford-Receiver-Wiring-Harness.html?search=ford+harness[/URL] After splicing the required wiress to the aftermarket head unit adapter it wouldn't power up. I had connected both the red ACC switch power and yellow constant power wires. Nothing... I put off putting wire nuts on, and the yellow and red spliced wires contacted, and the **** thing started to power up... Hmm, I thought to myself. I figured maybe either the red or yellow wire was not connected correctly. I tried yellow->red, red->yellow. Still didn't work... So I spliced the red AND yellow wire from the head unit to the incomming yellow, and it works! I felt like saying screw it, keep it that way... But I know somthing isn't right and it might cause me problems. What could be the issue here? My head unit is also getting very hot to the touch, and I can smell a bit of burning after its playing a CD for 5 minutes. [/QUOTE]

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