Why is my 7 pin trailer plug not working?
Why is my 7 pin trailer plug not working?
The circuits that run through the 7 pins of a trailer plug are the indicators, left and right, the stop light, the brake light, and the brake line. If the corrosion build up is significant and not able to be fixed by cleaning then replacing the trailer plug with a new plug may be necessary.
What would cause trailer lights not to work?
Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal.
Why is there no power to my trailer plug?
If they are clean or still no power after cleaning, I would check your grounding connections. Make sure your grounds are firmly connected to a clean, bare metal surface. Next, test the pins on the connector where the wiring harness plugs into the truck using a circuit tester like Item # 40376.
Does trailer need to be on hitch for lights to work?
My question is does the trailer need to be grounded to my truck for lights to work? In some cases trailer lighting will ground through the hitch ball but that’s typically only if the actual ground circuit is insufficient. This is not an ideal setup. It needs to ground through the wiring of the trailer harness.
Does a 7 pin have constant power?
Expert Reply: The only pin that should be continuously showing 12V power on the 7-Way connector on your vehicle is the 12V power circuit which is normally the black wire but not always. If the brake output is the one with constant power then that is why your brakes engage when you plug your trailer in.
Why are my trailer lights not working?
Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal.
How do you wire a trailer?
Connect the white wire to the trailer frame using a self-tapping screw. Splice all wires to the same color wire on the 5-pin connector. Tape all connections. Wire color codes may not be the same on the truck as on the trailer. If you’re adding a 5-pin truck side connector, use a test light to determine the circuit colors.
What is a 7 pin trailer connector?
The 7-pin connector uses on newer trailers all 7 pins according to the ISO standard. On older trailers there’s sometimes a 5-wire setup using a 7-pin connector. In these cases exclude connection for right tail light (58R) and rear fog light (54G) and connect the tail lights only to pin for left tail light (58L).
What is a 7 way trailer plug?
The 7-Way Trailer Plug is a round 2″ diameter connector that allows an additional pin for an auxiliary 12-volt power or backup lights.
