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It's in your rca lines or you are missing or don't have good enough ground to your amplifier or CD player. To check this simply unplug your RCA's at the radio it's your radio. If it dosent it's in your rcas
You got to connect the blue amp turn on wire. If still dont work. then you got to find the factory amp find the two wires that sends frequency signals to the amp. You will see a total of 7 wires. So you've got to use process of elimination. Use a multimeter.
1.Constant 12 Volt 2. Ground 3. Amp turn on 4. + output wires going to the + of the subwoofer
5. - output wires going to the - of the subwoofer 6 + input wires going to the radio harness 7 + input wires going to the radio harness
6 & 7 are like the rca's you plug in at the input of an aftermarket amplifier and and on the other end plug in the output subwoofer of the Radio.
So on a factory amp you wont see any RCA's its all wires. Once you find the first 5 just remember the last 2 wires.
If you want your radio to control the gain and volume of the Subwoofer get a long RCA plug it on the back of your radio that says sub output and then cut the other end of that RCA and connect the positive the + input wire on the amp and the negative to the negative input wire on the amp.
If you dont know whats positive or negative just go ahead and connect it and experiment. You will know if your in phase when the subs sound boomy. Then the connections are correct. If it sounds Tinney then the connection is out of phase. solder then tape all connections with black electrical tape. Dont leave any power wires exposed or else cause a short and blow fuses.
The only wires that should be going to the subs are the Speaker wire, The power, goes to the amp, Blue the remote wire should only go to the remote spot on the amp wich is usually labeled rem. and the ground all goes to the amp.
that is very strange but it could be that when you put the cd in the radio it maybe sending out a quick shot of amplified power I would try disconecting the subs put in a cd let it play a little then plug the subs in while the cd is playing and see if they work if this works you may to get a new radio or put in a switch to turn the subs off or some type of momentary circuit breaker I'm just trying to help I never saw anything like that before good luck........
The person(s) who hooked up your system made a boo boo. They wired your remote turn on lead to the power antenna lead instead of the amp turn on line (both are blue and easy to mix up). Thus when your radio is on it sends a signal to the amp and the amp turns on, but when you set to CD the signal goes away and your amp shuts down. Easy fix, just re-wire the amp turn on lead and the problem will be fixed.
The remote turn on lead for the subwoofer amplifier has been connected to the power antenna lead (solid blue) of the radio. It just needs to be connected to the radios amplifier turn on lead (blue with white stripe).
the connections to the amp seem to be all wrong .check the wiring again.Does your deck have a seperate sub woofer output ?If it does , just connect one sub, i repeat, just one sub,and see the output.
check the GAIN control on the amp.it should be 2/3rds of the max volume of the cd player.check it is not zero!
Set the amp to the L.P.F. position.
bye .happy listening.
The amp's remote turn-on wire is probably connected to the blue wire coming from the back of the stereo - this is intended for a power antenna, which is why it only works when listening to the radio.
Disconnect it from the blue wire and connect it to the blue/white wire coming from the back of the receiver and you should be good to go.