bhaugen

I have an issue with my trailer lights plug on my 03. No right turn signal on the trialer only. Checked the Fuse under the hood and its good no power at the plug for this circuit. Left turn, tail lights and trailer brakes work. Any thoughts? I can imagine its some super expensive module under the hood.

bhaugen

I found a similar issue in the towing section Sorry for this.

El Borrego

I have an '03 Dodge 3500 Dually HO and had the same problem with the left trailer turn signal. Had it checked at 2 places after I spent time checking. It is not the trailer. I found my problem at the Dodge dealer. It was a shorted out buss module under the hood where the fuses are. It cost about $800 to replace at dealer. Only place for parts is Dodge. I asked about jumping the wire to another light wire or blank on module. Dealer said computer won't let it happen. Truck might crank a few times then it won't crank at all. Computer runs the truck, you just drive it. Good luck.

Totallyrad

When it happened to me on the right side it was a fuse under the hood.