I had a 2 Din Becker PCM Nav unit on my 1999 C2, I'm looking for the Door speaker wires and Rear Speaker wires. There are 6 adapter plugs, based on the Porsche diagrams the color of the wires are different to mines. Does anyone know which plug is the one connecting to the speakers?

 

The output to the factory amp is the yellow plug...the blue is audio in and he green is CDC control

 

Is that the 6 wires on the yellow plugs are for desh, door and rear speakers? but what about the right and left? And Why is there a blue plug for audio in?

 

The blue audio is is from the CDC

 

That was not English...the blue plug is audio in from the CDC

 

Thanks! Do I just need to connect the wires from the yellow plug to my new HU output for sounds? Does the amp isolate to the left and right from there?

 

I've tried to connect the speaker wire from the yellow plug, but it still has no sounds. The chart has a list of the wire color and thats exactly why i got, but why is 4 + and 1 -?

 

The speakers may all share a single ground... not sure, but I would recomend doing yourself a favor and just get a wiring harness to adapt the factory plugs to an aftermarket radio. Worst case scenario it will cost $15 - $30, but it will preserve the factory plugs and get rid of all the guess work.

I found a guy on ebay who was extremely knowledgable and even made some minor modifications to the harnesses for me to suit some of the aftermarket features of the kenwood radio I purchased. I think the seller was euromotorspeed. No affiliation, but the guy was extremely helpful and knowledgable.

 

That's the guy who makes the double din conversion kit. I ordered one and it's on its way. There are other posts that comment on the experience with the harness included in the kit.

 

I had no issues with the harness, but I contacted him when I placed my order and even followed up with a phone call to ensure we were on the same page. My understanding is that there are minor differences in the harness based on year and bose / no bose, but they seemed very knowledgeable and were able to modify the harness to suit my needs exactly.