Is Blue Wire of Trailer Wiring Normally the Brake Output Circuit
Updated 05/12/2025 | Published 05/06/2025 >
Question:
I found in my junction box that the blue wire is taped and the red is conected to bring power to electric brakes and the trailer has blue wires for electric brakes is this normal o is it personaliced modification??
asked by: Gaspar G
0
Expert Reply:
Hay Gaspar, the blue wire running to the brake output circuit is normal so in that regard it's standard. But the other colors you mentioned do not appear to be standard so I would run the wires by the correct function to the wiring of your trailer instead.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Curt TriFlex NEXT Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Under-Dash Box
- Under-Dash
- Up to 4 Axles
- LCD Display
- Single Trailer Only
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is Torque Spec for Castle Nut of Dexter 3,500 lb Axle
- Q&A: How Does Curt TriFlex NEXT Brake Controller Mount
- Q&A: Brake Controller Wiring Harness and Air Bags for 2014 E-450
- Q&A: Availability of Flat Mount Coupler With 5" Mounting Hole Spacing
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Q&A: Can You Transfer a Trailer Brake Controller from Ford to Chevy?
- Q&A: Recommended Brake Controller for a 1997 Ford Explorer
- Q&A: Recommended Brake Controller w/a Compatible Harness to Replace a Draw-Tite I-Command
- Article: Brake Controller Installation: Starting from Scratch
- Article: Adding Electric Over Hydraulic Disc Brakes
- Article: How to Install a Brake Controller on Chevrolet / GMC 1999-2006 Pickups
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)


Gaspar G.
5/9/2025
Tank you bery much!!