What to do when trailer tow hitch warning light comes on?
Should the light come on with nothing attached, you don’t need to pull over immediately. Once you have parked, make sure there is nothing wrong with the hitch itself or the electrical connectors, and ensure that your lights are working. If this warning light stays on, the circuit should be investigated further for any shorts or damage.
What to do when your trailer lights go out?
Clean the trailer light wiring connectors Clean the plug and socket with a special cleaner. If after you check the tow vehicle for problems the trailer lights still appear dim or aren’t lighting at all, clean the connector plug. Spray the connector with an electrical contact cleaner and use a fine wire brush to clean the contact pins.
What’s the best way to troubleshoot a tow vehicle?
Since I do not know what tow vehicle or wiring harness you have I will try to give you the best general guidance I can. Usually the best way to troubleshoot your wiring issue is to disconnect the trailer from the truck’s 4-pole and test each one individually.
Where do I find the tow hitch indicator?
Most vehicles with a tow hitch will have an indicator on the dash regarding the electrical connection, between the trailer and the towing vehicle but it may vary from one vehicle to another. Refer to the owner’s manual for more information on the indicators for your vehicle.
What should I do if my trailer lights are not working?
Usually the best way to troubleshoot your wiring issue is to disconnect the trailer from the truck’s 4-pole and test each one individually. However, based on your description of the problem – all trailer lights working until you turn on the vehicle headlights – there is one most-likely cause that should be easy to correct.
Since I do not know what tow vehicle or wiring harness you have I will try to give you the best general guidance I can. Usually the best way to troubleshoot your wiring issue is to disconnect the trailer from the truck’s 4-pole and test each one individually.
How can I check the wiring on my trailer?
Check the trailer wiring by running a continuity test by connecting a jumper wire to the connector pins and a continuity tester to the sockets. Connect the jumper wire to one of the pins in the trailer socket. A continuity tester contains a light bulb and a battery.
How to tell if a tow light is on or off?
On the 4-pole pin for the yellow wire you should detect a steady signal when the brake is pressed and an on-and-off signal when the left turn signal is on. On the pin for the green wire you should detect a steady signal when the brake is pressed and an on-and-off signal when the right turn signal is on.