Trailers have complex electrical systems of their own - from lighting and brake controllers to refrigeration units and liftgate power systems. Our technicians specialize in comprehensive trailer electrical diagnostics and repair.
Trailer electrical systems power safety and compliance
Lighting, ABS, and charging circuits must work together so brakes and signals communicate clearly to other drivers and to your tractor. Corrosion at plugs, chafed harnesses, and failed modules create ghost faults that waste time. We overhaul trailer electrical systems with clean routing, solid grounds, and components rated for road vibration.
Lighting, ABS, and reefer support
We repair and replace marker and stop/turn circuits, upgrade connectors where heat damage appears, and diagnose ABS codes related to power or sensor wiring. For refrigerated trailers, we support electrical interfaces that keep your reefer controller, battery charging, and tractor connection dependable in hot South Carolina summers.
Trailer AC overhaul and temperature control
When AC performance drops, cargo quality is on the line. We evaluate refrigerant charge, compressor health, coil condition, and controls—then repair or replace components to restore cooling capacity. Maintenance plans can include leak checks and filter service so small problems do not become full failures mid-route.
Benefits of keeping electrical and AC current
Reliable systems reduce unplanned stops, help you pass inspections, and protect temperature-sensitive freight. Investing in thorough electrical and AC work now avoids revenue loss and rework later.
We perform complete trailer electrical overhauls including ABS wiring, lighting rewires, connector replacement, and refrigeration unit electrical service. All work is DOT-compliant and fully inspected.
What's Included
Why Choose KM Truck & Trailer?
Trusted & Professional
Experienced technicians delivering reliable repairs you can count on.
Flexible Payment
Convenient payment choices designed to fit your budget.
Satisfaction Guarantee
Quality service backed by our commitment to customer satisfaction.
Friendly Support
A helpful team ready to assist you every step of the way.
Frequently Asked Questions
Trusted by Truck Drivers Across SC
Based on 100+ verified Google reviews
"They are so amazing people, well spoken, on time and quick like ambulance. Fair price. They took 37 minutes to fix my brake leaks on my semi truck."
"I've been in trucking business for 9 years. I've never been to any shop like this. They're honest, fast, the price is very reasonable. Highly recommend!"
"This is the best diesel repair shop in South Carolina on I-77 and I-26 area. They are very truthful and very honest people. Highly recommend."