identify red white and black white wires on audio in cg captiva

[grassy79]

I'm just after what colour wires mean what with the stereo of a 2008 cg captiva as someone previously has attempted to install another stereo and it is a mess

 

[Kenton82]

Use a volt meter and see weather they are carrying any voltage. I would have thought that these are ground and positive, but i would start by using the volt meter and testing with the ignition (key) in all positions.

Good luck
K.