Topic: Horn rod ground


jakes    -- 01-08-2019 @ 2:05 PM
  Working on my 37 club cabriolet and can't get the horns to work via the horn button. When the headlight wire connector to the steering gear box was removed and the center pin of that connector was grounded, the horns blew. My next thoughts that the horn wire in the horn rod (in the steering column) may have been broken, and not getting grounded. I then pulled the horn rod and checked the continuity. All good there. As an added insurance while the horn rod was out I added addition solder to the end that is in contact with the headlight connector. Still no ground. Anybody know what my next steps should be/
Thanks, Jakes


ford38v8    -- 01-08-2019 @ 2:57 PM
  The horn button itself completes the ground to the wire down the tube, thence to the horn. Look to the underside of the button.

Alan


jakes    -- 01-09-2019 @ 9:13 AM
  Horn button is making contact with the horn rod end. I'm lost on the fix.
Thanks for your thoughts.



MG    -- 01-09-2019 @ 10:03 AM
  jakes....I had the same problem with the horns on a '37. I went through all of the pushups as you have done to no avail. I finally inspected the bullet connectors and sleeves in the horn circuit and found them to be high resistance connections. I cleaned and soldered them and the horn problem was resolved....

Read this thread as well. - Especially page 2 of it for the fix. > https://www.earlyfordv8.org/forum/viewmessages.cfm?Forum=18&Topic=4273&keywords=bullet%20connectors

This message was edited by MG on 1-9-19 @ 11:44 AM


supereal    -- 01-10-2019 @ 1:29 PM
  The wire from the button that is threaded thru the shaft is twisted each time the wheel is turned. Couple that with the greasy mess that is usual at the bottom of steering sector, it is a miracle that any horns worked well. You should check with an ohmmeter to see if the button is actually making contact with a good ground. If you need to replace the wire, use the original to pull it into place. Otherwise, it is a very difficult task. The horn(s) are always supplied power, and they work when the button in the wheel provides a ground. Horns draw lots of amps, so any damage from twisting the wire can reduce the ability to provide adequate power. As mention above, the connector between the horn wire and the horns is a common problem.


G Tosel    -- 01-10-2019 @ 1:59 PM
  The only time the horn button moves is when the lights are turned on or off. When you turn the wheels, the horn button does not move, therefore there should not be any twisting of the wire inside. That does not rule out the fact that the wire and button may not be making good contact to provide the ground for the horns.


jakes    -- 01-11-2019 @ 6:32 AM
  Problem solved. As it turn out the pervious owner had painted the area in the horn/headlight switch handle (see below photo). Once the paint was removed the horns was back in working order. Thanks to all of you for help and suggestions.




engine    -- 01-11-2019 @ 8:55 AM
  I had the same problem with the paint preventing good contact.


ford38v8    -- 01-11-2019 @ 11:33 AM
  Jakes, Thank you for the feedback. It's good to know the problem was solved, and your picture sure tells the story!

Alan


EFV-8 Club Forum : https://www.earlyfordv8.org/forum
Topic: https://www.earlyfordv8.org/forum/viewmessages.cfm?Forum=18&Topic=12603