So I purchased an ‘98 Accord recently, but didn’t realize until after I was driving it home that it had a problem with the horn. It worked, sometimes–as long as the keys weren’t in the ignition, or the wheel was turned a little to the left or right.
After a few guesses and part replacements (relay, “clock spring” AKA “cable reel assembly”), I realized I was going to have to bust out the multimeter and really trace the problem. I figured out that the horn switch is supposed to get a ground from the steering wheel, and when the switch is pressed, it passes that ground through the cable reel assembly to the horn relay. It turns out that the ground on the steering wheel itself was intermittent. And it got its ground from the center of the steering shaft, which was also intermittent. (more…)
