What Voltage is your Trailer At?
I am working on adding LED run way lights to Bestia. My idea was to have yellow in the front to the just behind the fenders, then it switches to red. This way its legal on the highway and would light the trailer up and also work as evening docking lights.
I got everything done and was ready to hook it up when i discovered the voltage on my trailer is 7.5V not 12 as i would expect.
I checked at several light locations and they are all 7.5
I have all LED lights on my trailer, i checked my truck and its putting out 12.5 to the hitch harness, and then in tongue when it changes from the 7 pin harness to the trailer harness its drops to 7.5. I don't see anything that can cause this drop.
With only 7.5V my lights don't work as intended. Kinda stumped what direction to go now.
What Voltage is your Trailer At?
Don't led's have built in resistors to keep them from burning out? That's my thought.
What Voltage is your Trailer At?
At what point in the trailer wiring are you splicing in at?
Where is the first reading of the lower voltage?
Re: What Voltage is your Trailer At?
Did you install the LEDs? Did you install them in series instead of parralle?
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What Voltage is your Trailer At?
You have any idea what gauge wire is used for the trailer wiring? Do they wire each light in series or parallel. Most of those LED circuits are probably constant voltage or constant current setups. I'm not sure what is most common in trailer wiring. You know that the wire acts as a resistor, so you can get pretty significant voltage drop over long distances for thinner wire.
Re: What Voltage is your Trailer At?
Mike
Just for comparison, I measured the voltage on my trailer. I had 12.4 V at the truck plug and 11.6 V to 12.2 V at various lights on the trailer. Trailer was not hooked to truck, so ground was completely through plug. Trailer is 2010 basic single axle Boatmate. All LED's except license plate.
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Re: What Voltage is your Trailer At?
Dump the dealer and take it to a trailer shop..
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