Thread: Replacement rear view mirror

There's a member on here that's an expert on rear view mirrors for these cars. He's not online as often as he used to be, but send him a message. He will sell you one.

Name is: RareGMFan

http://www.grandprixforums.net/threa...r-view-mirrors

All run the risk of leaking. Its the design of the company that makes them.

Mine went and I replaced it with one from a maxima. It had the auto dim, home link garage door openers, and a compass. Compass only worked in reverse though. Never bothered to really figure ou why.

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My 1998 had the stock Donnelly mirror with three wires: Yellow is power, Black is ground, and green is autodim inhibit. this is so the mirror will not dim when the car is in reverse. I got a Onstar mirror with a 16 pin connector and had to splice it in.

16 pin: (*required; **required if you have a temp display)

* 1 = Grey = not used
* 2 = Bare = Microphone
o OnStar Mirrors
* 3 = = "Passenger Air Bag on" notification
o some GM trucks - ground pin to activate icon
* 4 = = "Passenger Air Bag off" notification
o some GM trucks - ground pin to activate icon
* 5 = = auto day/night signal from LH outside mirror
o If you have a dimmable mirror, the rearview mirror can dim it with this and pin 16
* 6 = Brown = Temp probe connection**
* 7 = Green/Black = Temp probe connection**
* 8 = Black = Ground*
o Common to Pin 9
* 9 = Light Green = Reverse Dim Inhibit
o Common to Pin 8, +12V from reverse lights to disable dimming
* 10 = Gray = Microphone
o OnStar
* 11 = Dark Green/White = keypad signal (out)
o OnStar - multiplexed signal
* 12 = Light Green = keypad +5v supply (in)
o OnStar
* 13 = Yellow = +12V switched (ignition)*
* 14 = Yellow/Black = Green LED signal
o OnStar - apply 12v to light LED.
* 15 = Brown/White = Red LED signal
o OnStar - apply 12v to light LED.
* 16 = = day/night signal to LH outside mirror
o If you have a dimmable mirror, the rearview mirror can dim it with this and pin 5

So I took the old mirror off and took down the sunroof switch bezel to access the wiring. Snipped the mirror wires (no connector) and pulled the mirror out. I installed the new mirror, it fit the shoe fine but I had to find a #8 machine screw to lock it into place. Ran the wires up into the headliner and spliced in

Car yellow -> pin 13 power
Car black -> pin 8 ground
Car green -> pin 9 inhibit

I haven't had the issue on my GP, but my old 98 Chrysler Sebring had a fluid leak like that in their Donnelly mirrors. 9 times out of 10 it stays contained inside the housing but it does contain Mercury, so open it at your own risk. Eventually it'll dry and obstruct vision in the mirror itself.

If your car already has the provisions for the compass and everything, then it's up to what you want to spend really. Auto dimming is nice but not a huge deal to me. Also know that OnStar on cars that age are completely obsolete and won't work as is.

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