Rear speaker wire polarity?

[seasofcaladan]

Hi all, just a quick question regarding the brown and blue rear speaker wires. Does anyone know which one is positive and negative?
Cheers.

 

[grogee]

From memory I think they match what's behind the head unit. If you're using an ISO adaptor, the speaker wires to rear are green and purple (I think). The ones with black stripe are negative.

 

[seasofcaladan]

Thanks for replying. Still not sure which is which. The adaptor that fits to the speaker has blue and brown and further back along where it fits another adaptor, attached to the bin, they are white and yellow. Here's a picture. Cheers.