Well I installed Tow Mirrors on my truck the other day, and I had to install a new switch unit for the Temp Control section. Everything went great until I noticed yesterday during a ice storm I did not see my out side temp reading. I took the dash switch section apart again to make sure I did not forget to hook up anything, and everything was fine. So before I take this in to the dealer to figure this out. Is there anything else I can check? Does the outside temp reading go though the Temp switch section?