How to Troubleshoot the Electric Brakes on a Horse Trailer
- 1). Check the electrical connection between the horse trailer and the vehicle. Make sure that it is securely connected and not damaged. Use a 12 volt test light to test whether power is reaching the trailer connection.
- 2). Open the fuse box of the vehicle. Use the diagram on the fuse box to locate the fuses related to the towing lights. Replace the fuse if necessary.
- 3). Use a screwdriver to remove the lens from the malfunctioning light. Check to see if the bulb is burned out or broken. Replace with a new bulb, if necessary.
- 4). Use a 12 volt test light to probe the terminals in the bulb socket. Connect the ground clip of the test light to the frame of the trailer. Use the probe to test the connections. If the light illuminates, there is power reaching the bulb socket. If the light does not illuminate, there may be a short between the bulb socket, and the vehicle connector.
- 5). Replace the lens cover with a screwdriver. Make sure that the lens is aligned properly and tightened securely. Be careful not to tighten the screws too tightly, as you could cause damage to the lens.