i cant seem to figure this one out. i have two amps. one for the front door speakers, one for the two 10's. when i plug in the rca's into the sub amp, i get engine noise from the front door speakers. when i unplug them the engine noise is gone.
can someone please help me. i am going crazy trying to figure it out.
thanks

 

check your grounds

 

everything is grounded correctly. i dont know what else to check.

 

did you run the RCA's on the same side as your power wire from the front to hte back of the car? btw: which car ?

 

no, the power is on the drivers sied and the rca's are on the passengers side.
its an 02tl-p. i am using the avic n1 deck.

 

If all else fails, try a ground loop isolator. (Not the best thing for sound quality, but a good diagnostic tool, and sometimes the only thing that seems to solve the problem).