Questionquestion: is it the unit or the wiring?
I bought this cheap-0 install it in my 2004 gmc seirra. with bose and onstar. bought the expensive harness 150.
the unit power up and worked fine until the truck is shut off and it sits for an hour or two. its winter so it gets cold. Start truck and eveythig comes on except the unit. unplug unit take it in house for a couple mins plug it back up and it works untill it sits with no power. I have the power amp wire off of the expensive harness going to the ingingtion red wire on the radio. and there is a mute wire coming off the radio is this a nessacray connectons?
AnswerAfter to disconnect the negative battery terminal, which is necessary on pretty much every car nowadays when you install anything electrical.
1. Disconnect everything. Check the fuses on the unit and on the car for the radio.
2. Connect only the black, red, and yellow wires in that order.
3. If everything is working connect all of the other wires, orange is a fader for the lights, theres should be two blue wires, one is .3 volts for a power antenna wire, and the other is above 3 volts for an amp turn on. Usually, brown is mute which isnt needed.
