Getting Trailer Running Lights to Work on a 2005 BMW X5 Trailer Wiring Harness
Updated 07/23/2013 | Published 07/20/2013
Products Featured in This Question
Question:
HOW DO I HOOK UP THE NIGHT TIME TAIL LIGHTS WITH A CURT WIRING HARNESS FOR A 2005 BMW X5 TRAILER HITCH? WE HAVE TURN SIGNALS AND BRAKE LIGHTS FUNCTIONAL AT THIS POINT
asked by: James
Expert Reply:
Getting the running lights to work would require attaching the correct wire on the trailer wiring harness you are using to the correct wire on the 2005 BMW X5. It will be very similar to the video I have linked showing a typical installation of wiring harness # 119250KIT.
You will need to either use the included circuit tester with the wiring harness or # PTW2993 if you need one. Then test the taillight wiring to find the correct wire for the running light circuit. If you do have power at the 4-Way on the running like circuit but not on the trailer the issue is most likely a bad ground. Make sure the main trailer connector ground and all the grounds for the lights are attached to clean and corrosion free bare metal surfaces. Also make sure that the vehicle and trailer side connectors are free of dirt and corrosion.
Product Page this Question was Asked From
Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Trailer Hitch
- For Towing
- Class III
- 600 lbs TW
- 6000 lbs GTW
- 6000 lbs WD GTW
- 2 Inch Hitch
- 600 lbs WD TW
- Concealed Cross Tube
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Hitch Recommendation for 2015 BMW X5 with M Package- not Performance M
- Q&A: Comparing Curt and Draw-Tite Trailer Hitch Receivers For a 2017 BMW X5
- Q&A: Comparing the Draw-Tite Trailer Hitch # 75600 and the Curt Trailer Hitch # 13077 for a 2015 BMW X5
- Q&A: Installation of the Curt Wiring Harness C59236 on my 2011 BMW X5
- Q&A: Setting the Power Output and Boost Settings on a Tekonsha P3 Trailer Brake Controller
- Q&A: Parts Needed to Get a Hitch and 7-way Installed in a 2012 BMW X5 with No Factory Tow Package
- Q&A: Will Stealth Hitch Interfere With Kick Sensor on 2022 BMW X5
- Article: My Trailer Hitch Doesn't Fit
- Article: Trailer Wiring Diagrams
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Best Vehicles to Flat Tow Behind an RV
- Article: How to Correct Noise from Exhaust Rattling Against a Trailer Hitch
- Article: Rooftop Cargo Carriers