Ford Excursion :: Horn Isn't Working - Relay Location?


Mar 28, 2015

My horn isn't working. The under-dash fuse is OK and was going to check the horn relay, but can't figure out which one it is despite numerous FTE and Google searches. I pulled the cover on 2 power distribution boxes under the hood, driver's side. One box has 2 relays. The other has 4. Which one controls the horn?

Then...how do I test it to see if it's good/bad?

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