Need to know what color to hook up amps remote wire in 05 Sierra - does anyone happen to know what the ignition wire color is for an 05 GMC ...

does anyone happen to know what the ignition wire color is for an 05 GMC sierra 1500? i am using the stock radio and i need to know what color it is so i can tap my remote wire into it so it turns the amp on and off when i start and turn off the car.

thanks for your time
- Nick

Try with a test light at the switch and it should pink, orange, or brown. I think that pink should work.

You want to tap into the RAP fuse supply at the radio, it is usually green/black or solid green, use a test light to confirm, but it is the wire that stays hot, keeps the radio on after you turn the ignition off and it only turns off after a short amount of time or you open a door. If you tap into the radio ignition it will take in unwanted noise and if you truck the radio off with the truck on, depending the amp you have, it could give you a deathly feedback into the amp and max out your subs, due to the ignition be hot with no RCA signal.

Radio 12v
orange
+
radio harness


Radio Ground black/white - radio harness
Radio Ignition (Class 2 Serial Data)
Radio Illumination N/A
Factory Amp Turn-on pink + radio harness
Power Antenna N/A
LF Speaker +/- tan - gray +,- radio harness
RF Speaker +/- lt. green - dk. green +,- radio harness
LR Speaker +/- brown - yellow +,- radio harness
RR Speaker +/- dk. blue - lt. blue +,- radio harness

miserytom wrote:Radio 12v
orange
+
radio harness


Radio Ground black/white - radio harness
Radio Ignition (Class 2 Serial Data)
Radio Illumination N/A
Factory Amp Turn-on pink + radio harness
Power Antenna N/A
LF Speaker +/- tan - gray +,- radio harness
RF Speaker +/- lt. green - dk. green +,- radio harness
LR Speaker +/- brown - yellow +,- radio harness
RR Speaker +/- dk. blue - lt. blue +,- radio harness

That radio (orange) you posted is the 12 volt constant, you want his amp to never turn off? And the factory amp turn on will not work.

if its wrong then blame the12volt.com lol, plus my post doesnt say that the orange is an ignition wire does it?

according to the12volt.com there is no ignition switched power at the radio, you'll probly have to run one from the fuse box

Those trucks use the computer to turn on the radio that is why it is best to use the RAP fuse supply wire. You would think I was just making stuff up here.....WOW. LOL