Will Switching to LED Running Lights on Trailer Pulled by 2019 GMC Sierra Fix Them Going Out
Question:
When my trailer is hooked to my 2017 yukon all is fine. When I attached my 2019 seirra, the running lights incandescent come on for 1 sec and go out. All other lights work fine. When I attach my sierra to a trailer with LED lights all works fine. If I disconnect 5 of the 13 running lights on the trailer, they work when connected to my 2019 sierra. The moment I plug in another one of the 5, they go off in 1 second. I sespect that it is an amperage limit on the trailering program in the seirra. Suppose I change over to LED lights, for the running lights on my trailer...do you think that would help? Thanks
asked by: Michael F
Expert Reply:
First, thank you for your detailed explanation, it was really helpful. And I think you hit the nail on the head with what the problem is in regards to your running lights going out when connected to your 2019 GMC Sierra. Something we have seen, especially with newer pick-ups, is that their factory trailer wiring is more complex and sensitive to trailer wiring, which is why when you unplug some of the lights they still work fine, but the full 13 lights is causing an overload.
So while you may want to first go ahead and just check that all your lighting connections are secure (it can't hurt), I do recommend replacing your incandescent running lights with LED lights like the Optronics LED Trailer Clearance or Side Marker Light # MCL66RB or # MCL81AB.
I have added a link below to our entire selection of LED running/clearance lights, and you can filter them based on the size, shape, and color you need for your trailer.
![Kyle S](https://images.etrailer.com/static/images/catg/people/1237_tn.jpg)
Products Referenced in This Question
Optronics LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens - 12V
- Trailer Lights
- Clearance Lights
- Rear Clearance
- Side Marker
- Rectangle
- Surface Mount
- Submersible Lights
- LED Light
- 4L x 1W Inch
- Red
- Optronics
more information >
Product Page this Question was Asked From
Optronics LED Trailer Clearance and Side Marker Light - Chrome Plated - 6 Diodes - Amber Lens
- Trailer Lights
- Clearance Lights
- Rear Clearance
- Side Marker
- Rectangle
- Surface Mount
- Non-Submersible Lights
- LED Light
- 4-1/2L x 2W Inch
- Amber
- Optronics
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Video: Optronics Trailer Lights - Clearance Lights - MCL66RB Review
- Video: Optronics Trailer Lights - Clearance Lights - MCL40RB Review
- Shop: Black Bracket and Single Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights
- Article: Trailer Wiring Diagrams
- Q&A: Grounding Side Marker Lights with 1 Wire
- Q&A: Which Mounting Bracket for Optronics MCL61ARB Light
- Q&A: Matching Horse Trailer Clearance Lights and Light Bar
- Q&A: How To Ground 2 Wire Trailer Light that Replaces 1 Wire Trailer Light
- Q&A: Availability of Single Wire Plug for Optronics Clearance Light MCL67ARB
- Shop: Optronics Armored LED Clearance and Side Marker Light - 6 Diodes - Steel Housing - Amber Lens
- Shop: Optronics LED Trailer Clearance and Side Marker Light - Chrome Plated - 6 Diodes - Amber Lens
- Search Results: mcl66apg
- Search Results: a65p
- Search Results: mcl63rb
- Search Results: mcl66rpg
- Search Results: mcl66
- Shop: LED Clearance or Side Marker Light with Reflector - Submersible - 2 Diodes - Rectangle - Red Lens
- Shop: Single Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights
- Shop: Optronics LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens - 12V
- Shop: Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Red Lens
- Video: Optronics Trailer Lights A45BB Review
- Shop: RV Exterior Lighting
- Shop: Wheel Cover
- Search Results: led marker lights
- Search Results: a65b
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Q&A: How to Wire Electric Brakes on a Tandem Axle Trailer
- Video: Optronics Trailer Lights - Clearance Lights - MCL81AB Review
- Video: Review of Superchips Performance Chip - Programmer w Monitor - SU20617
- Shop: Trailer Wiring