I have a friend who is trying to put a new stereo in his van. Cannot get the speakers to work. Wiring seems to change color from the speakers to the back of the radio unit and we are unable to find the right combination of wires to make any of the speakers work. Downloaded some wiring diagrams but they are not helpful. Color codes do not match what is in truck. Can anyone help me out so I can help him out? Thanks in advance.
if diagrams don't work track ur wires the darker wire will alwayss be negitive, for example my old subrban had brown and blue, brown was negitive, also it had a light green and purple light green was my negitive green my positive.