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 >
Continue Researching
- Article: Breakaway Kit Installation for Single and Dual Brake Axle Trailers
- Video: Installation: Rhino-Rack Nautic Stack Kayak Roof Rack w/ Tie-Downs on a 2017 Kia Forte5
- Shop: Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs
- Video: What to Know About the Demco Hydraulic Brake Actuator w/ Electric Lockout
- Article: Trailer Wiring Diagrams
- Shop: Hopkins Wiring Harness with 5-Pole Flat Trailer Connector - Trailer End - 18" Long
- Shop: etrailer Kayak Tie-Down Kit
- Shop: Rhino-Rack Nautic Stack Kayak Roof Rack w/ Tie-Downs - Post Style - Folding - Universal Mount
- Shop: Malone FoldAway-5 Kayak, Canoe, and SUP Roof Rack w/ Tie-Downs - J-Style - Folding - Clamp On
- Shop: Rhino-Rack Cam-Buckle Cinch Strap and Anchor Kit
- Shop: 7-Way Molded Trailer End with 6' Cable - HD Blue Insulated
- Shop: Trailer Wiring
- Search Results: dw05744~5
- Q&A: Reverse Lockout Solenoid Replacement for Demco with 800 psi Rating
- Search Results: cap
- Search Results: hopkins brake controller harness
- Search Results: 20099
- Video: Detailed Breakdown of the Dexter BrakeRite II Electric Over Hydraulic Actuator Kit
- Q&A: Where To Attach Blue Wire From 5 Wires on Trailer When Installing a 7-Way Connector
- Q&A: Troubleshooting No Power on the Blue Brake Output Wire from a Brake Controller
- Shop: Brake Controller
- Video: The Low-Down on the 7-Way Molded Trailer Wire Connector, 4' Long
- Video: Reverse Lockout Solenoid Kit for Demco DA66B Hydraulic Brake Actuators Review
- Article: Trailer Lighting Requirements
- Q&A: Replacement Fulton Trailer Jack for Sled Bed trailer
- Q&A: Mounting Plate Bolt Hole Dimensions For Fulton XLT Bolt-Thru Swivel Trailer Jack # F26ZR
- Video: Dexter BrakeRite Electric Over Hydraulic Actuator Manufacturer Interaction
- Search Results: square jack
- Search Results: torsion axel
- Search Results: marine jack
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..