How to Get Separate Turn Signals and Brake Lights to Work on a Trailer
Updated 07/08/2021 | Published 11/08/2011
Question:
hi i have 2004 ford 350 diesel 6.0 with a 7 pole outlet i build a trailer and i put red for stop amber for turn white for reverse wen i put turn signal red and amber turn on wen i push stop pedal also red and amber turn on and i notice that in the 7 pole wiring diagram stop and turn are the same wire what part do i need to separate the wires in the trailer
asked by: Jorge F
Expert Reply:
If your trailer has separate turn signals from the brake lights and you want them to remain that way, you will need to use a special converter. On the trailer side, behind the 7-Way, you will attach the Vehicle to Vehicle Taillight Converter, # 118158. On the 7-Way wiring, locate the wire for the left turn and brake and attach it to the yellow wire on the converter input side. Connect the wire from right turn and stop to the green wire input side. Ground the white wire to the trailer frame.
On the output side that will go to the trailer lights, you will have the yellow wire, which will now be left turn only, the green wire for right turn only, and a red wire for brake lights only. Note that the running light wire is not involved at all.
Product Page this Question was Asked From
2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights
- Flat Tow Wiring Harness
- Splices into Vehicle Wiring
- Tail Light Converter
- Universal Fit
- Tow Ready
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: 2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights
- Shop: Hopkins Tail Light Converter - LED Compatible
- Search Results: 7 pin trailer cable
- Article: Trailer Wiring Diagrams
- Search Results: bathroom fan
- Shop: Curt 2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights
- Shop: Roadmaster Brite-Lite 3-to-2 Tail Light Converter for Towed Vehicles
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Video: Review of Roadmaster Replacement Monitor Wire Patch Cord InvisiBrake System - RM-450008
- Shop: Demco Classic Base Plate Kit - Fixed Arms
- Search Results: camco sewer adapter pro
- Search Results: invisibrake parts
- Q&A: Separating Trailer Turn Signals and Brake Lights
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Shop: Mighty Cord 5th Wheel/Gooseneck Wiring Harness w/ 7-Pole Connector - 7' Long
- Video: Feature Breakdown: Hopkins Tail Light Converter
- Video: What to Know About the Mighty Cord 5th Wheel/Gooseneck Wiring Harness w/ 7-Pole Connector
- Search Results: tail light converter
- Search Results: tail light converter
- Video: Ultimate Overview of the Ventline Roof Vent w/ 120V Fan
- Video: Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C55310 Review
- Search Results: falcon tow bar
- Article: Trailer Lighting Requirements
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: RV-Mounted vs Vehicle-Mounted Tow Bars
- Q&A: Which is Better Roadmaster or Blue Ox Tow Bar
- Q&A: Wiring A Trailer So That Turn Signal And Brake Signal Are Separated
- Video: What to Know About the Second Vehicle Kit for Roadmaster InvisiBrake Flat Tow Brake System
- Video: Camco Revolution RV Sewer Hose Swivel Lug Fitting w/ Twist-It Clamp Review
- Q&A: Rebuild or Repair Kit Availability for Blue Ox Aventa LX BX7445
on Flat Tow Wiring Harness
John
3/18/2020
I have a seven way Hopkins blade plug that I attached to my car. everything is working properly when I do a voltage test of each individual blade to the ground blade. The vehicle has a separate turn signal indicator. It looks like the running lights and the brake lights use the same bulb. I did not connect the brake light cable. Because I couldn’t figure out which blade it would connect to on the seven way blade.