Trailer lights
Laughing Gas
Joined: Jul 2009
Posts: 1,020
Likes: 409
From: NE Ohio
The only issues with LEDs on the trailer is to be sure you get the polarity right - they don't work if hooked up backwards. Just like any DIODE, the current only goes one way!!
I rewired my 18' car-hauler trailer with all new wiring and LED lighting, and added a few more 'clearance lights' lights as well. Now all LED clearance lights, and replaced the incandescent tails and license plate light with LEDs. Now less electrical draw even with the added mid-ship running lights on the fenders and additional three-light bar on the rear crossmember. My truck already had the trailer-tow lighting relay package, so the blinker and flasher rates are unaffected by the change.
I rewired my 18' car-hauler trailer with all new wiring and LED lighting, and added a few more 'clearance lights' lights as well. Now all LED clearance lights, and replaced the incandescent tails and license plate light with LEDs. Now less electrical draw even with the added mid-ship running lights on the fenders and additional three-light bar on the rear crossmember. My truck already had the trailer-tow lighting relay package, so the blinker and flasher rates are unaffected by the change.
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Mountain Pass
Joined: Jul 2014
Posts: 244
Likes: 0
From: Minneapolis & Terlingua
The only issues with LEDs on the trailer is to be sure you get the polarity right - they don't work if hooked up backwards. Just like any DIODE, the current only goes one way!!
I rewired my 18' car-hauler trailer with all new wiring and LED lighting, and added a few more 'clearance lights' lights as well. Now all LED clearance lights, and replaced the incandescent tails and license plate light with LEDs. Now less electrical draw even with the added mid-ship running lights on the fenders and additional three-light bar on the rear crossmember. My truck already had the trailer-tow lighting relay package, so the blinker and flasher rates are unaffected by the change.
I rewired my 18' car-hauler trailer with all new wiring and LED lighting, and added a few more 'clearance lights' lights as well. Now all LED clearance lights, and replaced the incandescent tails and license plate light with LEDs. Now less electrical draw even with the added mid-ship running lights on the fenders and additional three-light bar on the rear crossmember. My truck already had the trailer-tow lighting relay package, so the blinker and flasher rates are unaffected by the change.
Lead Driver
Joined: Feb 2013
Posts: 5,006
Likes: 72
From: Roseville, MN
I could be wrong, but i think the main issue with LED lights is that they don't draw enough current for some circuits to work correctly. But that shouldn't be an issue with LED lights on a trailer, because the truck works fine with no trailer connected, which draws even less current than LEDs. In fact, the heavy duty flashers are required so the flasher will work with the EXTRA draw of incandescent trailer lights. You might be able to get by with a standard flasher using LEDs on the trailer.
Laughing Gas
Joined: Jul 2009
Posts: 1,020
Likes: 409
From: NE Ohio
I could be wrong, but i think the main issue with LED lights is that they don't draw enough current for some circuits to work correctly. But that shouldn't be an issue with LED lights on a trailer, because the truck works fine with no trailer connected, which draws even less current than LEDs. In fact, the heavy duty flashers are required so the flasher will work with the EXTRA draw of incandescent trailer lights. You might be able to get by with a standard flasher using LEDs on the trailer.
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Melanie Ross Thaxton
2009 - 2014 F150
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