Trailer Wiring Installation & Repair in Orange, CA
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Safe towing requires dependable electrical connections. We install and repair trailer wiring harnesses, connectors, brake controllers, and lighting to keep you road-legal and secure.
Common Needs & Symptoms
- New 4-pin or 7-pin connector installation
- Trailer lights dim, flicker, or don’t work
- Brake controller not engaging properly
- Corroded or damaged connectors
Our Diagnostic & Install Process
- Vehicle Integration: Proper power, ground, and signal taps
- Connector & Harness Testing: Confirms continuity and load
- Brake Controller Setup: Calibration and function checks
- Weatherproofing: Protects from corrosion and damage
Services We Provide
- 4-pin/7-pin harness install and repair
- Trailer lighting troubleshooting and fix
- Electric trailer brake controller install
- Connector replacement and corrosion repair
Schedule Service
Tow with confidence. Book trailer wiring installation or repair with Joseph Harrington Automotive.
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You Can Count On Joseph Harrington Automotive
- Auto Computer Specialist
- ASE Certified
- Electrical Specialists
- All Makes & Models
- In Business Since 1986
- Great Customer Service
- Quality Work - Affordable Rates
Our Services
Auto Electric Repairs in Orange, CA
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- Battery Service
- Alternator Service
- Starter Service
- Ignition Repair
- Check Engine Diagnostics
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- Wiring Repair
- Fuse & Relay Service
- Warning Light Repair
- Power Window/Lock Repair
- Lighting Repair
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- Interior Lighting
- Power Seat/Mirror Repair
- Blower Motor Repair
- Instrument Cluster Repair
- Sensor Replacement
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- ECU/PCM Service
- Remote Start/Alarm Repair
- Charging System Service
- Trailer Wiring
- Electric Fan Repair