1. Prepare the trailer. Park your boat trailer in a safe location and turn off the engine. Engage the parking brake.
2. Check the turn signal bulbs. Make sure that all of the turn signal bulbs are properly seated in their sockets and are not damaged.
3. Turn on the turn signals. Turn on the turn signals and verify that the lights are working. The turn signals should flash on the side that is turned on.
4. Check the brake lights. While the turn signals are on, press the brake pedal and verify that the brake lights work. The brake lights should illuminate when the brake pedal is pressed.
5. Check the hazard lights. Turn on the hazard lights and verify that all of the turn signals are flashing simultaneously. The hazard lights should flash on both sides of the trailer.
If any of the lights are not working, you may need to replace the bulb or fix a wiring issue.
