Quote:
Originally Posted by Papa Rad17
so for the most part if I can get a mirror with lights and garage door opener on it the wire up should be pretty much the same right?
|
It should be more or less the same. I would asssume the garage opener would get its power from the same 12+ switched source it gets the power to display compass and autodim.
Quote:
Originally Posted by wws944
A few more comments:
First, sunroof cars already have a map light. So +12v, switched ground (to allow the BCM to turn the map lights on when a door is opened), and ground are already available. For cars that don't have this, the same wires are available at the dome light. This then leaves the temp sensor wire (for mirrors with temp display) and reverse signal (for mirrors with auto-dim) to run down the A pillar.
Looking at the wiring diagram in the Haynes #38026 manual, page 12-37, there is a mistake or two. It only shows two connections to the mirror - +12v and ground. In my '04 at least, the mirror is also connected to the switched ground - as the dome light is. Is this a change from earlier cars?
As an aside, I also note that the wiring diagram also shows a right (passenger) vanity mirror light. My car does not have one - even though it is a 'loaded' GLS. It only has a non-lit drivers side vanity mirror. Was that also a change from earlier cars? (Or perhaps a Malibu or Cutlass had it?)
|
My car had the standard Donnelly without the map lights. I would also assume those lights aren't switched off. The point of wiring them up to "ACC" is so the mirror doesn't drain battery. In my car, the dome light is not switched, meaning the light will stay on even though there's no key in the ignition. You don't want that because it will be a drain on the battery, especially if you leave the car off for a long time.
You're more than welcome to try wiring them up to the map lights. If your theory is right (that it's a switched accessory) then I will add that to the how to. If not, you have to run it down to the radio so when the key is off, the mirror is off too.
I can't answer your question about the switched ground. I have an 03 and as I said, the dome lights are readily available even though there's no key in the ignition.
Also, the Malibu DID have lighted mirrors in the visor. It's another mod I've been trying to do but the Malibu's visor looks longer and I can never find a color to match my headliner. As far as I know, no Alero/Grand Am has lighted mirrors in the visor.