Whats the problem?

Ok im trying to hokk up 1 ten inch subwoofer with a amp in my girlfriends car. She didnt want to change the factory radio, so ok, I bought a Line output converter. Ok hook it all up, power, ground, remote, speaker, good connections, no sound? Whats is the problem?

btw...what should i hook the remote wire to? Her car has the monsoon sound system in it so it has the amps already in the back to power her componets, so i hooked the remote wire to it (spliced) ans it works when it wants to, so can anyone tell me a dependable place to put a remote wire, instead of hooking it to the hot wire?

Sounds like you attached the remote wire to the speaker signal, that's why it's "working when it wants to", you're trying to turn on your amp with an AC voltage = not gunna work.

Get a voltmeter and find out which wire on the stock amps is live when the stereo is on and dead when the stereo is off, then use that one as your remote wire.