I've just spent hours on finishing installing an amp to my stock headunit. I have a problem though, the amp only turns on when the radio is on. The amp won't turn when the cd is playing. Can someone tell me how to wire it so it will turn on when the cd is playing. By the way I hooked up the lead wire to the power antenna part of the head unit. Even though we don't have a power antenna, there is a power antenna hookup in the back of the head unit. PLEASE HELP!!!!

 

You just answered your own question. Most radios with power antenna out only put out 12v when you are listening to the radio. When you are listening to a CD there is no 12v out of the power antenna hook up because you do not need it. You need to hook it up to your remote turn on.

 

which one is the remote turn on?

 

stock head's dont have remote turn-on
find the ACC wire.

Your amp will turn on with you car when u turn it to ACC.

From the car harness look for the white wire with the yellow strip, it should also have grey segmented markings.

If you have only one amp you're turning on just tap the remote turn on to that wire.

If you have many items, you're gonna have to use a relay.

Hope that helps

 

thanks. i'll try the acc wire

 

you could just run a line from your battery to the amp but put a switch in so that it isnt on all the time this way you can turn the subs on and off.