hey i bought an aftermarker cd player and a $150. metra wireharness for circuit city to install and they cant do it i got the cht 001 harness as requred and unit does turn on but no sound. they said they couldnt get the digital amplifier to turn on.myraider has thealpine system with amp.im trying not to bypass ampbecause would have to rewire vehicle and replace all 2 ohm speakers with 4 ohm please help me figure out how to make existing amp turn on

 

You will need to bypass the stock amp.

 

If you bought it at Best Buy they WILL INSTALL IT FOR FREE.

 

Best Buy Technician have bachelor's degree Automotive electrician.