auto chromatic mirror ??

69hemi · #1 (**permalink**) 05-09-08, 04:12 PM

i have the auto day/night mirror in my 94 fltwd, it doesn't seem to work correctly, not dimming, the light is on, but it doesn't seem to be dimming with brights behind me, is it possible the forward looking sensor isn't working because the NH safety sticker is interfering with it? the sticker is at the top middle of the windshield??

kevm14 · #2 (**permalink**) 05-09-08, 04:17 PM

If it uses the forward sensor to "see" night time, then I'd think that would only encourage it to work, rather than discourage.

69hemi · #3 (**permalink**) 05-09-08, 04:18 PM

that makes sense, guess i may have to break out the service manual...

kevm14 · #4 (**permalink**) 05-09-08, 04:30 PM

The only other programmatic design thing that would cause it not to work is the reverse cancel. Maybe this is common knowledge, but I scored a roof harness from a junkyard Caprice and installed rear reading lights and front map lights under the mirror by installing a different mirror (9C1s didn't get that stuff). Well, I still had the big ticket writing light but lost the connection after I put in a civilian harness. But there was an extra wire so I spliced it in. After I was all done, I noticed the big ticket writing light was dead!! But wait - when I put the car in reverse, it came on!! WTF!? Turns out what I plugged into was the electrochromatic cancel signal that goes hot ONLY when in reverse to not impede your rearward view (that is, if you back up like a man using your mirrors

). So that's how I know that...

So that part could be live all the time for some strange reason. Probably not but you never know.