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Car Horn Repair Tips

FH11MAR_516_13_019-1200 car horn

Connect a Fused Jumper

Vehicle horns sit up front where they’re exposed to rain and road chemicals. Once that spray gets into the horn’s innards, it can short out the coil and kill the vehicle horn (and blow the fuse in the process). But an inoperative car horn can also be caused by a bad horn switch in your steering wheel, a broken “clock spring” under the steering wheel, a bum horn relay, a broken wire or a corroded ground. Here’s how to check the most likely suspects.

Start with the fuse. Refer to the owner’s manual for its location. If the fuse is good, jump power directly to the car horn with a homemade fused jumper (photo). If the fuse blows, you’ve got a bum horn. If the horn makes a clicking sound, the problem could be a poor ground connection. Clean the horn’s ground connection and try powering the horn again. If the horn still clicks, you’ll have to replace it.

FH11MAR_516_13_020-1200 car horn

Check the Relay

If the car horn works with jumped power, the problem lies upstream. Before you waste time searching for a broken wire, try swapping out the vehicle horn relay (photo). If the relay works, you’re looking at a much bigger problem. Take it to a pro.

Required Materials for this Car Horn Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here’s a list.

  • 16-gauge wire
  • Clamps
  • In-line fuse holder
https://www.familyhandyman.com

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