All Trailer Lights Blink When Truck Headlights and Turn Signals are Turned On
Updated 07/21/2020 | Published 06/10/2012
Question:
When I turn my lights on and use a blinker all my lights blink including my running lights.When I have my lights off and use my blinkers they work just fine.I just ran all new wiring front to back and new tail lights.The wiring from my truck is a T-one connector I bought from you last week.Boat wiring is 5 wire white,green,green/brown,yellow,yellow/brown.Truck is a 4 wire.Is this the issue..I am lost and frustrated.
asked by: Joe M
Expert Reply:
The wiring harness on the trailer side is what is called a wishbone harness. It splits the running light signal so that you do not have to run a jumper wire from one side to the other. The yellow/brown wire is for the left side running lights and the green/brown is for the right side running lights. That could be what the problem is if you wired it differently.
Make sure that the trailer lights are grounded to a clean and corrosion free location of the trailer frame. Also check to make sure the main trailer ground and the vehicle harness ground are connected to clean and corrosion free bare metal surfaces.
Product Page this Question was Asked From
Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness
- Trailer Lights
- Tail Lights
- Brake/Tail/Turn
- License Plate
- Marker
- Square
- Surface Mount
- Submersible Lights
- Incandescent Light
- 5L x 4-1/2W Inch
- Amber
- Red
- Optronics
more information >
Continue Researching
- Search Results: trailer wiring
- Video: Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness Feature Review
- Shop: Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness
- Search Results: utility trailer wiring kit
- Q&A: Trailer Lighting Kit Recommendation for 16 Foot Trailer
- Video: Review of the Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness
- Q&A: Trailer Lighting/Wiring Kit for Snowmobile Trailer
- Search Results: st6rb
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Shop: TowSmart 4-Wire Y-Harness Connector - Trailer End - 25'
- Shop: Peterson Light Kit for Trailers Under 80" Wide - 20' Harness - Driver and Passenger
- Q&A: Connecting Trailer Side Marker Lights to Trailer Wiring Harness
- Shop: Brophy Circuit Tester for 4-Pole Flat Trailer Connector
- Shop: TowSmart Circuit Tester Kit for 4-Pole Flat Trailer Connector
- Q&A: Availability of Replacement Tail Lights for Peterson Boat Trailer?
- Q&A: Troubleshooting Peterson Tail Lights on Boat Trailer That Keep Burning Out
- Shop: Peterson Combination Trailer Tail Light - 7 Function - Incandescent - Square - Driver Side
- Shop: Peterson Combination Trailer Tail Light - 6 Function - Incandescent - Square - Passenger Side
- Video: Review of TowSmart Trailer Wiring - Trailer Wiring 4 Wire Y Harness Connector 25 Foot - TS67RR
- Video: What to Know About the Peterson Light Kit for Trailers Under 80" Wide
- Q&A: Recommended Trailer Wiring for 5x10 Trailer with 4-Way Trailer Connector
- Q&A: Does The TowSmart 4-Wire Harness Have A Single Or Dual Ground Wire?
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Trailer Wiring
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
on Trailer Lights
Gary R.
7/17/2020
When the head lights are off my blinks work fine on my trailer but with head light on they dont blink they just light up solid