Blinkers Do Not Work with Running Lights On on a 2007 Freightliner XL Classic
Published 01/15/2015
Question:
I have a 2007 Frightliner XL Classic, I just put new tail lights on it, I hook everything back up like it was I thought my blinkers work when running lights R off, but when they R on the blinkers dont blink?
asked by: David L
Expert Reply:
You will first need to make sure that the new tail lights are wired the same as the old ones. There are basically 2 types of wiring systems. First there is a 2-wire system that has combined turn signals and brake lights on the same circuit/bulb. And there is a 3-wire system that has separate circuits/wires and bulbs for turn signals and brake lights. On many tail lights the functions of the wires is listed on the back of the assembly. Since there isn't a standard wire color/function code you would have to wire in the lights by function, not color.
If you are using the right type of tail light assembly then the issue could be a bad ground. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the ground wires or studs are attached to clean and corrosion free bare metal surfaces.
Continue Researching
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Trailer Wiring
- Shop: Brake Controller
- Video: Feature Breakdown: Jacketed 2 Wire (Brake Wire)
- Shop: Vehicle Tow Bar Wiring
- Search Results: brake wire
- Search Results: trailer brake controller
- Shop: 12 Gauge 2 Conductor Jacketed (Brake) Wire Per Foot
- Shop: Trailer Light Mounting Bracket for 6-1/2" Oval Trailer Lights, Steel - Black Powder Coat
- Shop: Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens
- Shop: Curt 4-Way Flat Trailer Connector with Circuit Protected Powered Tail Light Converter
- Shop: Optronics LED Trailer Light - Brake, Tail, Turn - Submersible - Oval - Red
- Shop: 16 Gauge Primary Wire - Black - Per Foot
- Shop: Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End
- Search Results: 2 wire to 3 wire tail light converter
- Q&A: Towing a Trailer with RV Style 7-Way with Semi Truck with Semi Style 7-Way Connector
- Q&A: Towing a Trailer with 7-Way RV Style Connector with a Semi-Truck with a Semi Style 7-Way
- Q&A: 7-Way Wiring Options For Semi Tractor
- Q&A: Adapter for 7-Pole Round on Semi to 7-Way Flat Blade Style Trailer Connector
- Q&A: Wiring A Trailer So That Turn Signal And Brake Signal Are Separated
- Q&A: Converting 7-Way On Semi To Work With 7-Blade And Operate Electric Brakes
- Q&A: How to Make an Adapter to Go from Semi Truck 7-Way Round to RV Style 7-Way Blade on Trailer
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Video: How to Choose a Trailer Brake Controller
- Search Results: trailer wiring
- Video: Feature Breakdown: Universal Installation Kit for Trailer Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: What to Know About the Curt TriFlex NEXT Trailer Brake Controller
on Custom Fit Vehicle Wiring
