<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steve-SanJose-H3:
F5fstop,
Nice mirrors and heated too. I think we can all use a set of these.
1. How do you turn on the heating element? (My last Toyota had heated mirrors controlled by the rear window defroster button)
Mine aren't heated. However, looking at their site, you wire the mirrors to one of their modules, and install a separate switch, that turns the heater circuits on, and off. Probably with a built in timer.
I briefly looked at the mirrors and at the H3 rear window circuit, and believe you could do without the module, and wire them into the existing rear window heater circuit. Using the turn on signal from the switch to the BCM to energize a relay, which would allow B+ to go directly to the mirrors (with a fuse or circuit breaker in-line of course). Not sure if heated mirrors are needed that much in MI. My big question is how in hell would you pull those two extra wires (large gauge too), through the grommets in the mirror housings?
2. Do you think the Hummer dealers will start selling and installing these mirrors eventually?
Muth has had these add on signal mirrors for years on a lot of vehicle. I have installed at least seven sets on Grand Prixs for myself and friends, but I have never seen them offered by a dealer. They do have some local installation sites throughout the US, and some dealers might ship vehicles to an off-site install shop. I would call the dealer. Many dealers may not be aware of Muth.
3. How do you like them in daily use? The signal light doesn't compromise the use of the mirror itself? Must be great for getting attention of cars in the blindspots.
They stand out considerably. From the driver's point of view, normally they are not bright. They are installed in the mirror at a 45 degree angle toward the outside, with some laser etching where the nine LEDs shine through to help block the LEDs from shining in the driver or passenger's eyes. You can still see them operating, but a dull red light from the driver's and passenger's viewpoint.
If you stand behind the car, right at the edge of the bumper and outward for about ten to fifteen feet, they are bright and definitely let the world know you are turning. I have noticed one problem with the chrome mirrors, since the outside of the mirror it tilted inward, the LEDs reflect off the inner edge of the mirrors. Not a blinding light, but noticeable (strange for fake chrome plastic, how much they reflect light). This could be easily fixed if it bugs me too much, just by painting that inner edge with some flat black paint, but right now I'll leave 'em alone.
You do get to meet other H3 owners. 
Had one on Sunday pull into a Kroger parking lot behind me to ask if they were included in the lux package (he had base model). Another one yesterday morning pulled up next to me on the way to work and yelled over asking about the mirrors. Gave both of them the website, not sure about the guy who pulled next to me, but I think he heard the name of the manufacturer.
S. </div></BLOCKQUOTE>