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EFV-8 Club Forum / General Ford Discussion / Horn Wiring, 1934 Cabriolet

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Posted By Discussion Topic: Horn Wiring, 1934 Cabriolet     JDBenner 02-06-2019 @ 7:15 AM reply profile send p.m. Member Posts: 33 Joined: Jun 2013 I am trying to wire a pair of horns on my car which didn't have horns when I bought it. I need info on how to get the horn button off so I can check the circuit in the steering column. I know the horn button grounds the circuit and there is a wire and a rod . I would like to know the role of each. I have a short somewhere and I would like to understand the workings in the steering column before I tear into it. Thanks in advance for any help. TomO 02-06-2019 @ 8:02 AM reply profile send p.m. Senior Posts: 7244 Joined: Oct 2009 You don't need to remove the horn button to check out the circuit. The horn button is connected to the long rod that goes through the steering column and is easily bent. The yellow wire to the horns comes from the battery side of the starter switch and the black with yellow tracer comes from the light switch and should be grounded when the horn button is pressed. The wiring diagram shows a yellow with green tracer wire that comes down the steering column to the center contact in the light switch. This wire should show a ground condition when the horn button is pressed. If you don't get the ground continuity when the horn button is depressed at the light switch, you will have to replace the wire. I will let one of the other knowledgeable people on the Forum give you instructions on how to replace that wire without bending the light switch rod. Tom 3w2 02-06-2019 @ 8:59 AM reply profile send p.m. Senior Posts: 824 Joined: Oct 2009 Replacement of the wire within the rod within the steering shaft requires that the rod/horn button/light switch control assembly be removed from the steering shaft. This can be accomplished by removing the light switch at the bottom of the steering box and either have someone press down on the horn button or use a flexible yard stick or equivalent woven under one side of the steering wheel over the horn button and under the opposite side of the steering wheel to overcome the spring pressure on the rod assembly at the bottom of the rod. That gives you access to the fingered cup at the bottom of the rod below the spring which activates the several light switch positions. It is retained by a C-shaped retainer. Once this retainer is removed, the fingered cup and spring will come right off the end of the rod and you can then with draw the rod assembly upward and out of the steering shaft. You are fortunate that you have an open car as you can lower the top and remove the rod without bending it, which is extremely important. Other wise you would have to loosen the three bolts that attach the steering sector housing to the chassis frame and remove the two bolts attaching the column bracket/ignition switch assembly to the instrument panel and lower the column enough to remove the rod without bending it (as required with the closed body types). Once the rod is removed, melt the solder connection at the bottom of the rod and the old wire can then be removed from the top of the rod. Reverse the above steps once the new wire is installed in the rod. The attached illustration from the 1934 chassis parts catalog should be helpful as the components mentioned above are all shown in an exploded view. This message was edited by 3w2 on 2-6-19 @ 9:02 AM JDBenner 02-06-2019 @ 7:21 PM reply profile send p.m. Member Posts: 33 Joined: Jun 2013 Many thanks to both who replied. Those instructions should allow me to get it done. Thanks again. trjford8 02-07-2019 @ 7:50 AM reply profile send p.m. Senior Posts: 4203 Joined: Oct 2009 In addition to the good advice you have been given here's an additional tip in case you have to remove the horn rod. If the rod has to be removed it will have grease and oil on it. Cover all aspects of your upholstery because you can bet that some of that grease/oil will get on the upholstery if you fail to cover it. 3w2 02-07-2019 @ 4:28 PM reply profile send p.m. Senior Posts: 824 Joined: Oct 2009 Good advice! JDBenner 02-08-2019 @ 1:34 PM reply profile send p.m. Member Posts: 33 Joined: Jun 2013 Advice will be taken. Thanks to all.

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