My side view heated mirrors work fine, the questionis, do the small mirrors with the heat lines on them that are on the mirrors, do they or should they be lighting up when turned on? I could swear that they had yellow lights in them when I got the truck but now I'm not sure.

 

Mine don't light up.......the only thing that lights up yellow when they are activated is the light next to the button on the dash.

 

ditto mine. No lights in the mirror for me.

 

no lights in mine