I figures it out. Had to take the four pins from OE car harness plug and add them to the AMP plug. The amp plugs were only prepared for 4 speakers (or more if connected paralell)

Thanks guys for advice

The dash speakers continue to get driven by the head unit. With the factory installed amp there is an additional connector that has just the two dash speakers that plugs into the head unit speaker output. ...Lee Hi and thank You Lee. Just one question: the additional connector You mention; is that ...

Thanks both of you

Just installed the factory 4*50W Volvo AMP (behing the radio)to my SC-811 sound system. OE harness of course. Gave great improvement in bass, but I can`t figure out why the dash tweeters are dead. The harness seemed plug and play with no options or possibilities for wrong connecting. Anyone knows wh...

Hi Neil. Thank You very much for the reply. The reason for the late answer from me is that I dint recieve notification on my mail (I thought I would automatically) Seems I may have located a cable, so I would kindly ask to be able to come back to You.

thanks Lee

Hi guys.Not sure if I m posting in the wrong place here, since it s my first posting. I am looking for the no longer available cable harness for the factory installed (ekstra) amplifier which came with the R models. Thnks its part nr 6816303. Anyone?

Thanks