1. Brake Light Switch: The brake light switch is a common cause of this issue. It is located under the dash, near the brake pedal. Check the switch for damage or wear, and replace it if necessary.
2. Wiring: Check the wiring around the brake light switch and fuse box for any damage or loose connections. Repair or replace any damaged wiring.
3. Brake Booster: The brake booster is a vacuum-operated device that helps to amplify the force applied to the brake pedal. If the brake booster is faulty, it can cause the brake fuse to blow. Check the brake booster for leaks or damage, and replace it if necessary.
4. Master Cylinder: The master cylinder is responsible for distributing brake fluid to the wheels. If the master cylinder is faulty, it can cause the brake fuse to blow. Check the master cylinder for leaks or damage, and replace it if necessary.
If you are unable to find and fix the cause of the problem yourself, you should take your truck to a qualified mechanic for diagnosis and repair.
