I have a 92 Sc400 with the NAK system and plan on getting a nice 5CH amp to power some new speakers around the car. I want to use line converters on the outputs of the stock amp to feed the RCA inputs of the new one and retain the stock HU. Does anyone make a harness that will plug into the sockets of the stock amp without me having to butcher the stock wiring in the car? Thanks in advance...

 

search in the electronics forum for the answer, this is a pretty common question.