2013/14 New Style Photochromatic Mirror Retrofit
Past threads discussed this problem: old style auto dimming rear view mirror doesn't work when spoiler shadows light sensors on bottom edge of mirror.
Solution: mid-2012 and up auto-dim (photochromatic/ photochromic) rear view mirrors have light sensor inside UPPER part of mirror glass so even the big spoilers don't shadow sensor; auto-dimming works flawlessly on cars with big rear spoilers.
If anyone is interested, I can elaborate with part #s/wiring.
*New* 2011 Mustang GT Premium 5.0 MT82 Kona Blue
Last edited by RADTech; 12-06-2013 at 06:26 AM.