Gentex K21 Auto-Dimming Rear View Mirror w/Compass and Temp

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Gentex Auto Dimming Mirro w/Compass and Temperature
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Features

  • The Gentex K21 Auto-Dimming Rear View Mirror reduces eyestrain and driver fatigue
  • High-tech sensors and advanced circuitry recognizes and eliminates dangerous rear-approaching light
  • The K21 Auto-Dimming Rear View Mirror is equipped with a self-calibrating digital compass
  • Integrated remote exterior thermometer digitally reports outside temps and ice warnings
  • The K21 Auto-Dimming Rear View Mirror comes complete with detailed installation instructions and all mounting hardware
  • Installation of the mirror's electronic components requires some hard wiring (see Installation Guide tab for details)
  • Available with the optional Gentex Wire Cover for the most professional-looking installation that conceals loose wires (not necessary for all vehicles—see note below)
  • Your Gentex K21 Auto-dimming Rear View Mirror is backed by a 3-year / 36,000 mile warranty

Description

Headlight glare and your rear view mirror make a dangerous combination. Eliminate this volatile mixture with the Gentex K21 Auto-Dimming Rear View Mirror.

The K21 Auto-Dimming Rear View Mirror detects dangerous rear-approaching light and eliminates it with "intelligent" circuitry. What's more, less glare means less eyestrain and driver fatigue.

As if that weren't enough, the K21 Auto-Dimming Rear View Mirror comes with a self-calibrating digital display compass. The mirror even has an exterior thermometer that displays temps and ice warnings.

The windshield-mounted mirror comes complete with detailed installation instructions and all necessary hardware - perfect for the experienced do-it-yourselfer or professional installer with some wiring required. And, the Auto-Dimming Rear View Mirror comes with 3-year / 36, 000 mile warranty. See what a difference the K21 Auto-Dimming Rear View Mirror can make.

Notes

  • Installation of the mirror's electronic components requires some hard wiring (see Installation Guide tab for details)
  • The Gentex Wire Cover is highly recommended if there is 3" or more space between your mirror and the headliner. It conceals otherwise loose and visible wires running to the mirror. Select this part under "optional accessories" above.

Average Customer Rating

  (161)
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Perfect Mirror

Posted on 09/15/2005 by Peter J. P. (Toms River,NJ)

1 of 1 people found the following review helpful.

"This mirror looks stock. It works perfectly and the compass and thermometer are quite accurate. The compass is self calibrating and it was calibrated after driving only 3 minutes. The display is very clear and bright. I believe they should have included a wire cover to mask the wires from the mirror to the headlin er (it is apparently optional from the manufacturer). I cut a small piece of the black wire loom that was over the temp sensor cable and used that and it looks great. Wiring is very simple. Just use a multimeter to find a switched wire and they give you the hardware to connect the wire. I used a wire behind the kick panel that was a switched circuit. Very easy to find with the multimeter and the plug from one of the OEM wiring harnesses. Plus, it's easy to find a ground spot behind the kick panel."

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About Peter J. P.
I use my vehicle for
Pleasure
 
Professional look -- and it works great

Posted on 09/13/2005 by Jeffery D. - 2004 Dodge Durango (Chesterfield,MO)

"The mirror, compass and temp indicator works as advertised and looks great, like it was installed at the factory. After examining the installation instructions I opted to find an installer, figured the auto stereo guys could do it. It took him a little over an hour, no problem."

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About Jeffery D.
Vehicle
2004 Dodge Durango
 
Review of the K20.

Posted on 09/12/2005 by Howard N. - 2005 Ford Escape (Jamesville,NY)

"The mirror is perfect. I did struggle to find a proper spot for the Temp. probe, and did move it once already. Removal of the old mirror was very difficult, your instructions for a 2005 Ford Escape were not useful."

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About Howard N.
Vehicle
2005 Ford Escape
I use my vehicle for
all of the catagories listed below.
 
K20 Auto -Dimming Rear View Mirror

Posted on 08/30/2005 by Antonio L. - 2005 Nissan Frontier (Accokeek,MD)

"I recently purchased an '05 Frontier and was totally surprised to find that it was missing the very important features of a Compass & Temp gauge. I immediately searched the internet and found this item. Needless to say, I have been very pleased with it."

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About Antonio L.
Vehicle
2005 Nissan Frontier
 
Little life saver!

Posted on 08/30/2005 by Dan E. (Grafton,WI)

"Upon purchasing a new, I discovered it had the direction and temp digital read out and it did not. I was helping my son move and his brother-in-law had mentioned that I could get a mirror w/compass/temp/auto-dimming on the internet. I found this K20 mirror, ordered it and received it very promptly. I however had to have my son install it since I know very little about how to take moulding off and there the gromet is on the firewall. He installed it in 5 hours but it was well worth it-so I will take him golfing..a good deal for both. We enjoy the mirror and it works perfectly. I would certainly order this item or other products from autoanything. Satisfied.....!!!"

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About Dan E.
I use my vehicle for
Pleasure
 
2005 mustang

Posted on 08/30/2005 by Steve T. - 2005 Ford Mustang (Boise,ID)

1 of 1 people found the following review helpful.

"oem quality, something the 05 mustang should have came with."

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About Steve T.
Vehicle
2005 Ford Mustang
 
good product

Posted on 08/30/2005 by Gordon M. (Portland,OR)

"Just what I want and very easy to install approx 1 hr"

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About Gordon M.
I use my vehicle for
business
 
K20 Auto-Dimming,Compass,Temp Mirror Install

Posted on 08/30/2005 by Brian H. - 2005 Ford Escape (Salem,MA)

"The mirror itself is a huge improvement over the stock mirror from my 2005 Ford Escape XLT. Had I researched these mirrors prior to buying the vehicle, I'm not sure I would have bothered with the miniconsole as I could have added the maplights and homelink options to the mirror. Installation was mostly easy. Since the install was car-specific, I would have liked to have more specific information on which wire to tap into for "ignition only". Identifying a wire took as long as the rest of the procedure. Also, the placement of the thermometer sensor was confusing. Overall, this is an excellent replacement/enhancement. I like that both the compass and temperature are always visible. On my 2002 Outlander, you had to decide which you wanted to be visible."

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About Brian H.
Vehicle
2005 Ford Escape
I use my vehicle for
day-to-day travel, work
 
Good Deal

Posted on 08/28/2005 by Erick M. - 2004 Toyota Tundra (Woodbridge,VA)

1 of 1 people found the following review helpful.

"The cost was reasonable. Delivery was fast. Instructions were clear and easy to follow. My friends were impressed and some of them have sent off for the autodimming Mirror. Thanks!"

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About Erick M.
Vehicle
2004 Toyota Tundra
 
K20 Auto-Dimming Rear View Mirror

Posted on 08/26/2005 by David P. - 2010 Lexus RX 350 (Groton,NY)

"Very happy with this mirror. Instalation was easy. It looks and works great."

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About David P.
Vehicle
2010 Lexus RX 350
 
K20 Mirror A++

Posted on 08/26/2005 by David H. - 2005 Jeep Liberty (Lebanon,CT)

1 of 1 people found the following review helpful.

"Mirror is exactly what I hoped it would be. The unit looks completely stock.We wanted temp and compass in our Jeep liberty. The only problem is it wasnt available in the sport version. I wasnt about to pay $5000 for the next model up for the temp! It was something my wife really wanted(for potentially icy conditions).Easy installation,hardest part was finding the power source(not hard). with a 3 year warranty I am very pleased with this unit. I am pretty sure its the same thing I saw in a $38,000 Chevy...."

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About David H.
Vehicle
2005 Jeep Liberty
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