How do i install an amplifier in my 95 bmw 325i?

Question

can i use the wires from the factory amp in the trunk or do i have to run wires from the radio to the trunk. i have an alpine cd player

Answer 1

The best way is to install new RCA wires.  Then after that you have to add capacitors becasue the factory amp had them built in and if you don't some or all speakers will blow.  Lots or cutting stripping or wires..

I see I got a thubls down and need to give more information.  The factory amp does not use the (-) side of a normal input so you have 2 less wires going to the back of the car.  SO you have to add 2 wires just to get a signal to the rear, then you have to solder up the RCA connectors.  SO why not just get some new RCA cables and be done with it..