Hi Dean and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, the functions of the bike's colored wires would be dependent on the make and model as each manufacturer uses different color coding.
Still and for the JVC KD-X33MBS, the wiring (if have not been done) would be:
Which bike please?
Hi again Dean,
Would appreciate an update when able.