Should Blue Wire on Trailer Have Power
Question:
Should the blue wire in the main pigtail should I have juice
asked by: Freddie O
Expert Reply:
The blue wire on a trailer is typically the output wire to the electric brake assemblies. If this is the case on your trailer then the wire should only have power when you are hooked up to the tow vehicle and are applying the brakes, either by pushing on the brake pedal or by using the manual override lever on the brake controller.
Since trailer wiring colors aren't always consistent I do recommend verifying that this is the function of your blue wire. You can simply follow the wire along the trailer to see where it goes or simply test it by applying 12V power to see what function it activates.
Product Page this Question was Asked From
Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- Plug Only
- 7 Round - Round
- Pollak
more information >
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on Trailer Wiring
Ron
4/23/2024
Should your blue wire that goes to the electric brakes on trailer ever go to ground? On a Lakota 2021 Charger LQ horse trailer..