So wiring a radio into a 89 GM and for those of you that have worked with one of these before theres a main plug and then theres a 2 wire plug also. The Two wire plug has a yellow wire and an orange wire, of course the yellow is the constant 12v the orange is light illumination

now on the big plug theres also a orange wire which is for dimmer

The head unit only has one orange wire and its for the dimmer?

why is there 2 orange wires on the harness kit?



1989 Turbo Trans Am #82, 2007 Cobalt SS G85

SOme radios have illumination, some have dimmer, some have both, some have neither.

wrong harness was sold to me, hrmm that would explain it



1989 Turbo Trans Am #82, 2007 Cobalt SS G85