GM Mirror Auto dimming/compass/temp - Chevy Colorado & GMC Canyon

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Old 06-17-2007, 03:45 PM   #1 (permalink)
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Default GM Mirror Auto dimming/compass/temp

Installed this morning, about 90 minutes. At the same time I wired my Whistler in as well. All turns on with the key and off with the key. :D

Yes notice that only one small thin cable coming down out of the headliner.


Looking up from the lower right side:


This one happens to be a Gentex 177. All I need now is the temp sensor and plug it in. Can't wait to find one. :) Bought on eBay from salvage yard. This one is from a wrecked Cadillac. $39.00. Retails for 250.00
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Gentex 177 - Auto Dimming/Compass Mirror
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Old 06-17-2007, 03:57 PM   #2 (permalink)
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That's pretty sweet! Is the compass accurate? What about temp gauge, accurate as well?

Where do you live and do you want to install another one?? ;)
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Old 06-17-2007, 04:07 PM   #3 (permalink)
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Quote:
Originally Posted by Danny45
That's pretty sweet! Is the compass accurate? What about temp gauge, accurate as well?

Where do you live and do you want to install another one?? ;)
The compass only read S, SE, and E. So I got online and RTFM. So I press the compass button for 8 seconds and pick my zone, hold it down for 15 seconds and get a C showing, C for calibrate, drive around in a circle 1 and 1 1/2 times and bingo, it's calibrated. Now it shows the direction I'm driving, yippie...

The install is a lot easier than you may expect. It's all about having the right tools to crimp and strip the wires and enough connectors to do it right. Our little truck has so much room inside the dash and is extremely easy to work with. I have short stubby big arms, and reach up through just about anywhere in there. The A-pilar cover has enough space to 500 wires if you wanted to.

Im in KY/TN, about to move to AL, so it might be a little challenge to "hook you up". ;)
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2006 Canyon SL I4/5SPD
Putco Punch Grill Insert (Denali Style)
Pioneer DEH-P835R | PolkAudio DB6500 Components | 2 JVC EXAD 6" Powered Subwoofer CS-BB2
Gentex 177 - Auto Dimming/Compass Mirror
TruckBox | BedRug bedliner | GM Spoiler and bed Rails
Air Lift Helper Bags w/ Compressor | GM Fog Lights
20% Tint | 4" Nerf Bars | 2010 16" Wheels
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Old 06-17-2007, 04:50 PM   #4 (permalink)
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That's ok. How in the world did you do away with that huge wiring harness for that little tiny cable???

I have those stinkin' side air bags. I'd probably set one off is I started messing around in my A pillars.
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Old 06-17-2007, 08:48 PM   #5 (permalink)
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Well, the fact is, that only two wires is all that is needed for the mirror and compass. The wire that I have there is the cable for the radar detector, inside is the + and -.

Now if I can find a temp sensor, that will be two more wires going to the mirror. I'm not exactly sure though that this particular mirror will actually work the temperature indicator. There are two models of the GNTX-177, one like mine shown and the other has the word TEMP where the word MIRROR is located. But so far for about $30 I don't think I'll be out too much if it doesn't work it. If it does work though I think I'll just use a black RJ-11 line or some heat shrink to cover it all.
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2006 Canyon SL I4/5SPD
Putco Punch Grill Insert (Denali Style)
Pioneer DEH-P835R | PolkAudio DB6500 Components | 2 JVC EXAD 6" Powered Subwoofer CS-BB2
Gentex 177 - Auto Dimming/Compass Mirror
TruckBox | BedRug bedliner | GM Spoiler and bed Rails
Air Lift Helper Bags w/ Compressor | GM Fog Lights
20% Tint | 4" Nerf Bars | 2010 16" Wheels
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Old 06-17-2007, 11:49 PM   #6 (permalink)
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Dimmer works exactly as expected, it is actually faster than my previous cars dimmer, I'm very happy with the install.
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2006 Canyon SL I4/5SPD
Putco Punch Grill Insert (Denali Style)
Pioneer DEH-P835R | PolkAudio DB6500 Components | 2 JVC EXAD 6" Powered Subwoofer CS-BB2
Gentex 177 - Auto Dimming/Compass Mirror
TruckBox | BedRug bedliner | GM Spoiler and bed Rails
Air Lift Helper Bags w/ Compressor | GM Fog Lights
20% Tint | 4" Nerf Bars | 2010 16" Wheels
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Old 06-22-2007, 09:37 PM   #7 (permalink)
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Got the temp sensor today. Plugged it in, and nothing. :( Oh well. If you get a auto dimmer and want the temp, it has to have the button with TEMP on it not mirror. GNTX-177 has two models actually, one with COMPASS/MIRROR the other with COMPASS/TEMP. If you want temp don't get the COMPASS/MIRROR one.
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2006 Canyon SL I4/5SPD
Putco Punch Grill Insert (Denali Style)
Pioneer DEH-P835R | PolkAudio DB6500 Components | 2 JVC EXAD 6" Powered Subwoofer CS-BB2
Gentex 177 - Auto Dimming/Compass Mirror
TruckBox | BedRug bedliner | GM Spoiler and bed Rails
Air Lift Helper Bags w/ Compressor | GM Fog Lights
20% Tint | 4" Nerf Bars | 2010 16" Wheels
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Old 07-01-2007, 03:52 AM   #8 (permalink)
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I have the exact same mirror on the compass. Wish i could get temperature too.
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Old 07-01-2007, 07:20 AM   #9 (permalink)
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I have an 07 Canyon. It came with the map light mirror so the harness was already there. Bought a Donnelly # 19697 compass/temp/map light mirror and it was a simple plug and play. And everything works.
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Old 07-02-2007, 06:11 PM   #10 (permalink)
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Since johnny1 simply did a plug and play then the compass functions are internal to the mirror and all a guy like me with the base model truck needs to do is get the mirror and run power to it? Sweet.

Did you guys also use the factory mirror mount that is glued to the windshield or did you need a new one for the new compass mirror?
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