
Trailer Electrical Repair
Trailer electrical faults affect lighting, ABS and auxiliary systems. Repairs trace damaged wiring, connectors and power supply.
- AvailabilityCalls and messages 24/7
- WhereRoadside, yard or jobsite
- CategoryTrailer Repair
- On-site repairWhere feasible and safe
About trailer electrical repair.
Trailer electrical faults affect lighting, ABS and auxiliary systems. Repairs trace damaged wiring, connectors and power supply.
A mobile mechanic can look at the unit where it stands, whether that is the roadside, a yard or a jobsite. That can avoid a tow and shorten downtime when the fault is suited to on-site work.
Part of Trailer Repair.

When you might need it.
Any of these is a good reason to call and describe what the unit is doing.
Lights not working
ABS lamp on
Intermittent faults
Damaged pigtail or socket

What the service involves.
Testing circuits
Repairing wiring and connectors
Replacing the pigtail or socket
Verification
Causes and good habits.
These are possibilities, not a diagnosis. The only way to know is to test the unit.
Possible causes
- Damaged pigtails and sockets
- Corroded connectors
- Chafed wiring
Practical tips
- Inspect the cable coil for cuts
- Clean and protect connectors

What to expect.
Tractor-side faults may be involved, so both units may need checking.
On-site repair depends on the fault, parts, vehicle condition, safety and service feasibility.
(437) 601-8551Before you call
- Exact location, and direction of travel on a highway
- Truck or trailer type, make and year if known
- What happened and what warnings you see
- Whether the unit is somewhere safe
- A number we can call back
From the first call to the fix.
Call or message
Tell us where the unit is.
Describe the fault
Symptoms, lights, noises, leaks.
Agree the plan
Feasibility and dispatch, discussed honestly.
Diagnose and repair
On site where it is possible and safe.
Services that often go together.

Trailer Lights & Wiring
Trailer lighting is required for safe, legal operation.

ABS Diagnostics & Repair
A lit ABS lamp on the trailer indicates a fault in the anti-lock system.

Electrical Wiring Repair
Intermittent faults and dead circuits are often wiring problems: chafed harnesses, corroded connectors or loose grounds.

Electrical Troubleshooting
Electrical faults can be maddening.
Frequently asked questions.
Why do trailer lights fail intermittently?
Corroded connectors and chafed wiring are common causes.
How do I request this service?
Call (437) 601-8551 or message us on WhatsApp with your location and the issue. For non-urgent work, use the contact form.
Can every repair be done on site?
No. It depends on the fault, parts, vehicle condition, safety and feasibility.
Stranded on the Road? Let's Talk.
Tell us where your truck or trailer is located and what happened. Contact Fellows to discuss mobile repair options and next steps.
(437) 601-8551Have ready: exact location, truck or trailer type, what happened or what warnings you see, whether the unit is somewhere safe, and a callback number. Timing, dispatch and on-site repair depend on location, availability, the fault, parts and safety.