Troubleshooting Trailer with Non-Functioning Turn Signal Lights Behind a 1992 Toyota Pickup
Question:
The brake lights and turn signals and running lights are contained in one bulb on the trailer, however on the Toyota truck the brake lights and running lights are one bulb and the turn signals are another bulb on a separate curcuit. The wiring harness is installed correctly, the ground is good, The brake lights and running lights work fine, I have no turn signals on the trailer. I have turn signals on the truck. Please advise
asked by: Fred M
Expert Reply:
This is the right harness for your 1992 Toyota Pickup. It sounds like you might be having a ground issue. Check the ground wire from the harness. Make sure it has direct metal to metal contact with the frame or body. Rust, corrosion and paint can insulate an electrical connection. Check the grounds for the tail lights on the trailer, make sure they have good metal to metal contact. Finally, check the the trailer ground wires, make sure again, that they have good metal-to-metal contact.
You may also want to double check that you have the half of the harness with the brown and yellow wires on the driver side of the truck and the red and green side are run to the passenger side.
Products Referenced in This Question
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Converter
- Custom Fit
- 4 Flat
- Tekonsha
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Fred M.
3/2/2010
The brake lights and turn signals and running lights are contained in one bulb on the trailer, however on the Toyota truck the brake lights and running lights are one bulb and the turn signals are another bulb on a separate curcuit. The wiring harness is installed correctly, the ground is good, The brake lights and running lights work fine, I have no turn signals on the trailer. I have turn signals on the truck. Please advise