Another TY to the OP. Just installed a
Gentex 453 autodim with Homelink and amber compass on my 2007 Sport. Tapped into my sunroof wires as the OP did and the superb write-up and pics made it a piece of cake.
Got the mirror for $110 shipped from
Cam's Rearview Mirrors on eBay. The service and condition of the mirror were both outstanding. I ordered it over the weekend and it arrived via Priority Mail, solidly packed and with all needed connectors, zip ties, the wiring protector piece, instructions, etc., within a couple of days. As noted in the listing, I did have to extend the wires by a few inches but the seller even includes butt connectors to do that.
Speaking of connectors, one issue I had was being unfamiliar with the Scotchlok taps. Took a minute to figure out but they're genius - you place the tap on the wire and when you fold and close it, it creates a socket on the side. You then crimp one of the provided flat connectors onto the end of the mirror wire and simply plug it in to the tap. Much, much easier than the old kind where you insert the wire before closing the tap onto the target wire.
Pics of how it works are tough to find but here's an illustration of it closed on the wire - note the slot socket formed on the side.
The seller provides the needed flat plug, like this:
Just plug it in and you're done. I had never worked with those so as mentioned, it took a minute to put two and two together. Maybe it's been brought up elsewhere in this or another thread but if so, I missed it.
Finally, my mirror didn't need the compass calibrated - the direction appeared as soon as I turned on the key. It was also already set to the proper zone. But when I first started driving it would only show two directions in the display. If yours does this, drive around the block or in a couple of circles and it should begin working properly.
The mirror looks and works great and I'm very pleased.
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