27601 Co Rd 50
Nappanee, IN 46550
Call Us (574) 354-1384
Working Hours MON - THUR 7AM - 3PM
FRI 7AM - 1PM
Electrical diagnosis and rewiring

Trailer Wiring
& Light Repair

Intermittent short, bad ground, damaged 7-way plug, or a trailer that needs all-new wiring? We trace the problem and repair the system.

About this service

What This Service Covers and When to Get Help

Trailer electrical problems are not always visible while the trailer is parked. A damaged wire can test correctly in the shop and short only when road movement makes it touch the frame. Grounds, connectors, junctions, and the 7-way plug are other common trouble spots.

We diagnose the circuit methodically instead of replacing parts at random. Because troubleshooting time depends on where and when the fault appears, electrical work is estimated after we see how the system behaves.

Service pricing

Typical Costs for This Service

Electrical diagnosis is time-dependent. A simple connector repair can be small; tracing an intermittent short through a large trailer or installing a new harness and lights takes longer.

Electrical and lighting repair
$100-$1,900
Range we have seen from simple faults to involved diagnostics
Complete wiring and light replacement
$500-$3,000
Trailer type, length, access, and number of lights determine the total

These ranges are based on common scenarios supplied by our shop and are not a quote. Parts prices, trailer condition, configuration, and labor can change the final cost.

What to expect

What Happens During Service

01

Confirm the symptom

We test the connector and affected circuits and look for conditions that make the issue appear.

02

Trace power and ground

We work through plugs, grounds, junctions, wiring runs, lights, and connected systems.

03

Repair and function-test

We repair or replace the failed components and verify each affected function.

Intermittent faults can take time to reproduce

If the problem only happens over bumps, in wet weather, or with a certain tow vehicle, tell us. Those details can shorten the diagnostic path.

Common questions

Questions About Wiring & Lights

Why does my trailer test fine but short while driving?

Road movement can shift a loose or damaged wire into contact with the frame. Vibration can also interrupt a weak connector or ground. Intermittent conditions often take more diagnostic time than a constant fault.

Is the 7-way plug a common source of trailer problems?

Yes. Wear, corrosion, loose terminals, and damaged wiring around the 7-way plug are common causes, though the fault can be elsewhere in the trailer or tow vehicle.

Can you completely rewire a trailer?

Yes. We can replace wiring and lights throughout the trailer. The scope depends on trailer type, length, number of circuits and lights, and how accessible the wiring paths are.

Trailer repair in Nappanee, Indiana

Tell us what your trailer is doing.

Bring the trailer to our shop for a diagnosis and a repair plan based on the condition we find.

  • Straight answers
  • Common parts in stock
  • Custom work welcome