Connector and Plug Repair in Morris County NJ — Get a Solid Connection Between Your Truck and Trailer

If your trailer lights work intermittently, especially when you hit a bump or go around a corner, your connector probably has a bad contact. Corroded pins are the most common problem we see. Road spray, rain, and puddles push moisture into the connector and eat away at the metal contacts over time. Melted connectors happen when a short circuit sends too much current through one pin. A cracked or broken housing lets water in and accelerates corrosion. If you need to upgrade from a 4 pin to a 7 pin connector for electric brakes or auxiliary power, that is a job we handle regularly. A bad connector often damages lights too. We offer trailer light repair alongside connector work so everything works when we leave.

We inspect both the trailer side connector and the truck side receptacle. Corrosion on either side causes problems. We clean corroded pins using proper contact cleaner and abrasives when a full replacement is not needed. If the connector is too damaged to repair, we install a new one and wire it properly to all circuits. We test every circuit through the new connector to confirm solid contact. We apply dielectric grease to protect against future corrosion and install a weatherproof dust cap to keep moisture out between uses. If you are upgrading from a 4 pin to a 7 pin, we run the additional wiring and make sure everything is properly fused. If a new connector does not fix the problem, we move to diagnostic testing for trailer electrical faults to find the real issue.

Connector repair costs depend on the type and extent of the work. Cleaning and restoring a corroded connector is an affordable fix. A full 4 pin connector replacement is a straightforward job. A 7 pin connector replacement costs a bit more because of the additional circuits. Upgrading from 4 pin to 7 pin involves running new wires and costs more than a simple replacement. If the truck side receptacle also needs work, we factor that into the quote. We always give you the price upfront. Fleet customers with 3 or more trailers receive a 10% discount.

We have been repairing trailer connectors for over 30 years. We know the difference between a quick fix that fails next month and a proper repair that lasts for years. This is a family owned business. Our mobile service comes to your location. We use quality connectors with corrosion resistant contacts and we protect every connection with dielectric grease. We are open 7 days a week, 7AM to 7PM. We work on everything from small utility trailers to full size commercial rigs.