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tirwin tirwin is offline
Hey, nice marmot.
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Join Date: Feb 2011
Location: Marietta, GA
Posts: 4,907
Originally Posted by Jack Stands View Post
I’d try to check whether you’re getting voltage at the horn and work from there. Unfortunately, they’re kind of tucked up behind the bumper, but shouldn’t be too bad to access on an earlier car. Mine were bad, but I replaced them with the Hella Supertones. You can however try to adjust the horn to get them working as there is an adjustment screw (I seem to remember).
I don’t think that will work. 12V is not present at the positive terminal of the horn until pin 85 is grounded on the relay. You could put a meter on the + of the horn and then ground the relay but it would probably take a helper.

I just did this. Take a test light and connect it to battery negative terminal. Turn the key. Slightly pull the horn relay and touch the probe tip to pin 85. Horn will (should) honk.
There are those who call me... Tim
'83 911 SC 3.0 coupe (NA)

You can't buy happiness, but you can buy car parts which is kind of the same thing.

Last edited by tirwin; 05-01-2018 at 05:52 PM..
Old 05-01-2018, 03:07 PM
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