car stereo head unit rca pre out to home theater receivers?

i have a car head unit setup with pulsing neon lights and every thing with a wireless remote control wired in house i have 2 home theater receivers connected to each other for power and i want to wire the pre out of the car head unit to the receivers but doesn't work it is a kenwood head unit with a 2v pre out and has the choice of sub out or rear out i just want it so i can press the on button on the remote and the lights the music and everything turns on and works together and the other speakers can be used also i would like to add 2 1200w pioneer car sub woofers suggestions for power supplies and amps ?
the remote is just a simple remote with a on and off button the home theater recievers are on 24/7 so they dont need control
 
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