This write-up is for a Gentex rear view mirror install I just did and wanted to share. I will give a quick summary and then some pictures. First I got a used Gentex 177 mirror, mirror harness, temp sensor, and temp sensor harness off of ebay for $48 shipped. It was all from a 2002 Tahoe. The mirror harness will be a 7 pin, only 4 pins will actually be used: ignition power, ground, and two to the sensor. Make sure you get the two-line display type mirror so the compass and outside temp are always showing simultaneously. Some models just have a single-line display, so you manually have to switch between compass or temp. Also note that these mirrors have an autodimmer which works very well. I mounted the outside sensor on the grill support just like it is on my 2005 suburban which seems to work well so I just did a similar mounting scheme. I then ran the two wires from the sensor along the fender, through the firewall, up the A-pillar and across the headliner to the area where the stock mirror mounts. I drilled a small hole in the headliner underneath the trim piece for the mirror mount. The new mirror requires the windshield wedge that is glued onto the windshield. The wedges are cheap and the glue was $4 at O’Rielly’s. Don’t use too much glue, I learned this the first time. Just a small drop is what the instructions say and they mean it. I wanted the install to look clean so since the stock mirror is removed I would have an ugly mark on the headline where it used to be. I decided to machine a delrin (plastic) block on my mill which has the same features as the stock mirror mount. This allows me to use the stock mirror mount trim which just snaps onto the new machined block to give the install a clean look. I can make lots more of these parts if anyone is interested. They are on ebay right now.
Land Cruiser FJ80 Rear View Mirror Mounting Block Gentex upgrade
For hooking up the power to the mirror I used this thread. Thanks for that write up by the way.
How to tap the switched power from the moonroof / sunroof
Here are some photos of my install.
Two photos of the temp sensor-
Wires pass through headliner-
Machined Block and Mirror Mount side by side-
Final Install-
Land Cruiser FJ80 Rear View Mirror Mounting Block Gentex upgrade
For hooking up the power to the mirror I used this thread. Thanks for that write up by the way.
How to tap the switched power from the moonroof / sunroof
Here are some photos of my install.
Two photos of the temp sensor-
Wires pass through headliner-
Machined Block and Mirror Mount side by side-
Final Install-
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