Anyone grab power from their rear view mirror for a camera?

I've been on the forum for 45 minutes searching through threads, I can't find a write up anywhere on it. Believe me, I've searched. I know how this works too, one of you is going to find a thread immediately.

Anyways, I've picked up a dashcam and want to grab power from the mirror, I'd just like to see how any of you may have done it.

TIA

RichardCranium said:

I've been on the forum for 45 minutes searching through threads, I can't find a write up anywhere on it. Believe me, I've searched. I know how this works too, one of you is going to find a thread immediately.

Anyways, I've picked up a dashcam and want to grab power from the mirror, I'd just like to see how any of you may have done it.

TIA

Click to expand...

I know for a fact that folks have posted here about this exact issue but I think something is jacked up with the search function. A couple days ago some of us noticed that we lost all of our history when we went to look at our individual post history.

Might see if @NathanJax can help.

I am Looking into it the exact same thing but haven't pulled the trigger yet. I found the pinout of the 16 pin mirror connector over on www.gm-trucks.com. Info is below.

https://www.gm-trucks.com/forums/topic/51376-rearview-mirror-wiring-pinouts/

used

2 - Microphone (if the mirror is equipped with it)
3 - "Passenger Air Bag on" notification (if mirror is equipped with that display)
4. - "Passenger Air Bag off" notification (if mirror is equipped with that display)
5 - auto day/night signal, which comes from the LH outside rearview mirror
6 - Temp probe connection ( if mirror is equipped with display)
7 - Temp probe connection (if mirror is equipped with display)

8 - Ground

9 - one source says it's a Reverse Dim Inhibit signal so the mirror will not dim when
the vehicle is in reverse, another says it's a supply voltage from a back-up supply
(I guess so Onstar will still work in the event that the main evehicle battery is disabled in an accident).
I'm pretty sure if 12v is applied to this pin, the mirror will not dim no matter what.
10 - Microphone (if mirror is equipped)
11- keypad signal (out) for On-star (pressing any button puts out a 5v multiplexed signal on this pin,
- so you can't just use the buttons to control whatever you want to. Sorry.)
12 - keypad supply (5v) voltage (in) for the buttons

13 - ignition voltage (12v -main power IN to the mirror)

14 - keypad green LED signal
15 - keypad red LED signal
16 - return line to the LH outside mirror for day/night signal

Anyone else? I'll just probe it with the meter if I can find motivation today.

I believe either @kbuskill or @Doubeleive ran power to a radar detector from the mirror harness.

I remember reading about it last year sometime in a dashcam thread

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

middle pink wire right side of harness is + and corner black upper left corner wire is -

I am pretty sure the right middle +wire is pink I couldn't verify without contorting myself, if not just check the middle right wire for power, only powers on with the key in the run position, not a constant.

I found the matching connector and pin out from multiple sources. The picture below matches to the picture Wes posted. From bottom to top Red/White, empty, Green, empty, Grey, White, Blue, Black. Pink will be pin 13 midway down on the left side of the connector which is hidden by the wiring. Now I have to find the data for my Gen 4 Suburban.

Hobert said:

I found the matching connector and pin out from multiple sources. The picture below matches to the picture Wes posted. From bottom to top Red/White, empty, Green, empty, Grey, White, Blue, Black. Pink will be pin 13 midway down on the left side of the connector which is hidden by the wiring. Now I have to find the data for my Gen 4 Suburban.

View attachment 243905

Click to expand...

the 15+ only put out about 10v max at the mirror, you have to tap into the airbag light harness in the console above the mirror, I discovered that the hard way

Thanks Wes, you saved me countless HOURS!!