So this is the girlfriends van! The left rear light assy was smashed by her backing into a tree- replaced and it works like a champ. Th left front turn bulb blew so i replaced it and dont get anything. When I throw the turn signal on the left DRL drops off. Does anybody have a wiring diagram or testing procedure for an issue like this?

I am not familiar with all the new can bus stuff on lighting on the newer cars so need some guidance  I have a good Fluke 87V DVM.

 

thanks

So it's going to be like most the Rams are for control. Basically it is CANBus for the turn signal switch, and activation of the bulb from the TIPM. From that point on it standard 12V. Double check your bulb socket for corrosion it could be enough to foul connection. Probe the socket see if there is any 12V signal with turn signal or marker lights. If the other is working its not a fuse issue.