So another member, Lifted5.4Lariat, just sent me a PM about an issue he was having and after testing I have the same issue. We both did the towing mirror conversion and followed the install guide on the forums.

Drivers side:
- Heated mirror do not work
- Turn signal works fine
- Push heated mirror button and put on drivers side turn signal and signal won't work, turn off heated mirror button and turn signal starts to work fine.

Passenger side:
- Everything works perfect

The install should have been the same for both sides correct?

We both did:

 

No one else has had this issue?

 

I did the conversion, and had the problem you mentioned prior to moving the pins. Check LAB Mans post on how he did it. I followed it exactly, and everything is fine. I didn't cut or splice any wires ( I didn't feel like hooking up the puddle lamps) perhaps this is where the issue lies.

 

there are two black/lt blue wires behind the kick panel. it sounds like you hooked it to the wrong one. email me at fx4hoss@hotmail.com and i can send you what i used to install mine.