My alpine works fine when its on the tuner but when I put it on cd there is no sound. I don't know what's going on I checked the wiring.

Does you car volume get lower when you stop. If not sounds like an internal issue. No sound at all my brother hooked his up and when he switched to tuner everything would go through the subs but you would not know it sounded like his 6x9s no bass. was a wiring issue. I dont know if this helped or not.

Are you running your rear speaker through an amplifier? If so, you are probably using the blue wire (power antenna remote turn on) instead of the blue/white wire (amp remote turn on). The blue wire turns off when leaving tuner mode, thus turning off the amplifier.

Are you using an amplifier? If so, make sure you are using the blue/white wire (amplifier remote turn on) instead of the blue (power antenna remote turn on) to turn your amplifier on. The blue wire turns off when leaving tuner mode.

Are you using an amplifier? If so make sure you are using the blue/white wire to turn your amp on. The blue wire is power antenna turn on and turns off when leaving tuner mode.

are you using an amplifer? if so, it sounds like you are using the blue wire instead of the blue/white wire to turn the amp on. the blue is antenna remote and turns of when it is not in tuner mode. the blue/white is amplifier remote.

You have the wrong blue wire connected.
Your power antenna wire is hooked to the amp remote wire and vice versa.
Your radio thinks the tuner is off - and is dropping the signal thru the power antenna wire - and turning off your amplifer.
Switch the 2 blue wires in your install - and you'll be all set.

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actually, chrysler/dodge has factory Infinity sound systems installed. The nice part about these systems is that you dont have to bypass the amplifiers in order to put a new radio in, but simply power up the amp by hooking up the amp turn on wire at the harness. The alpine should have 2 blue wires coming off of the back, one that is solid, the other with a white stripe. The one that is solid only has 12v when the fm/am radio is on (used for power antenna) but cuts off when other sources are used (cd,aux,ipod). My guesses are, you have the amp wire on the vehicle harness (blue) tied into this wire, instead of the BLUE/WHITE wire on the alpine which has 12v as long as the radio is on. i hope this solves your problem, 9 times out of 10 on a chrysler this is it.

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DA2 (Supa)

have you fixed it yet? if not try this. your car probably has factory amplified speakers. hook up the remote wire AND the power antenna wire to the blue factory amp wire and it should work just fine

I think you are using an external amplifier,if this is the case,you may be using the wrong remote wire for the amp.
Alpine use two blue wires,BLUE (only) this wire is for the pwr antenna and every time you insert a cd, this pwr line cut out.
BLUE/WHITE STRIPE this is the remote wire that you need to connect the remote of the amplifier.

thanks for rating

Disconnect whatever is attached to the BLUE wire at the back of the Alpine deck. Re-connect it to the BLUE/WHITE wire instead. This should solve your problem.