Where is the harness located under the dash? I can't seem to find it.
Thanks

 

I think I found it, and from what I have read in the forums is that plug fits the Honda headrest speakers...??? Someone named Lucid came up with some speakers, but it looks like he is gone??? Is there currently a harness available that would fit that plug?

 

I might be mistaken but I thought the rear headrest speaker wires ran to the main radio harness? I might also be miss understanding your question.

 

Are any s2000s even wired for rear speakers? Most that I have seen don't even have the proper wiring in the harness for the radio.

 

I have two sets in MY07 in the roll hopes, When I installed the HU I tested the rear speaker leads and they're wired up to the main harness. BTW does anyone know if the rears share a common ground?

 

not likely....common grounds are really rare, and I've never seen one in a Honda