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Replacement rear view mirror

N

nando132

New member
Hey all,
I'm looking for info on auto-dimming rear view mirrors for a 98 gtp. Mine’s broken and I’d like to replace it. I like the auto-dim feature so I’d like to stick with that if possible.

I’ve searched and seen many posts on the topic but they are all pretty old, so I’m just looking for some current info.

I’ve seen posts talking about the fluid leaking out. Is this a problem with new replacements, or just when the old factory mirrors break?

Is it worth it to install a new auto-dimming mirror or should I simplify and go with a classic manual?

What is the best stock-for-stock replacement?

Thanks in advance for any input you can provide!
 


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.

Sent from my SM-G920P using Tapatalk
 
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.

Sent from my XT1650 using Tapatalk
 
I've still got my old mirror from when I upgraded to the onstar mirror if interested. Although, I see these mirrors all that time at my local junkyard and they're pretty cheap too!
 


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