Horn going off when headlights are on

Good morning,

Does the steering wheel have lights that come on when the lights come on? If you do, they yes, it could be the clock spring.

Roy

clockspring assembly spiral cable air bag
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2001 Toyota Truck Tacoma Extra Cab 2WD V6-3.4L (5VZ-FE)
Removal and Installation
Vehicle Restraints and Safety Systems Air Bag Systems Clockspring Assembly / Spiral Cable Service and Repair Procedures Steering Wheel Pad and Spiral Cable Removal and Installation
REMOVAL AND INSTALLATION
Steering Wheel Pad And Spiral Cable
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Components

Removal

1. Remove steering wheel pad
2. Remove steering wheel
3. Remove upper and lower covers
4. Remove spiral cable

Installation

1. Install spiral cable
2. Install upper and lower column covers
3. Install steering wheel
4. Install steering wheel pad

Got it.

You have a wiring issue somewhere in the system. You need someone who specializes in electrical repairs to track this down.

Roy