Originally posted on 02-26-2011 by KJM01
need some tech. info you guys. Ive got an 05 ford 500 w/ standard audio system, and i just picked up an Alpine CDA-117, and the wiring harness adapter(70-5520) and dash kit(99-5812) from metra just arrived in today(hooray!) from ordering on eBay. Now the question I have is about the orange illumination wire that is on the alpine wire harness is also on the metra wire harness adapter.
What i wanna know is does my car have that option for illumination?Should i join the orange wire or not?It would be nice to be able to turn down the light it is bright but not bad just would be nice to have the option.
I called metra but they are more interested on getting me off the phone than helping WTF i got hung up on after I asked one question.which im not sure is the best answer for me.I asked them about the ground wire. My alpine has a thicker ground wire that is supposed to be grounded to metal behind the dash, but metra customer service said clip the wire and join to the harness.
which way would be better? directly grounding to metal, or joining to the harness wire which is smaller?
thanks for the help!