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Old 10-23-2020, 09:59 PM   #1
masipopa
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Default Steering wheel turns light switch rod

When I drive my Model A'30 and turn a steering wheel, it also turns the light switch rod. Because the light switch rod turns it switches the lights on and off.
What could be a solution to this problem ?
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Old 10-23-2020, 11:00 PM   #2
700rpm
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Default Re: Steering wheel turns light switch rod

There should be a small brass bushing at the top of the light rod. If that is missing it can cause your problem.
Bratton’s has them. This is from their website: “ This bushing slides up the horn rod to the top under the switch handle disc. This keeps the rod centered in the steering wheel. If this is missing, the horn rod drops to the bottom of the steering wheel hub, resulting in the lights turning on and off as you turn the steering wheel.”

https://www.brattons.com/media/catal...6/5/0/5050.jpg
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Last edited by 700rpm; 10-23-2020 at 11:07 PM.
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Old 10-24-2020, 05:51 AM   #3
masipopa
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Default Re: Steering wheel turns light switch rod

Thank you Ray. So to install this bushing I will need to take apart light switch spider and bracket at the bottom of light rod, remove the light rod and put the bushing at the very top ?
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Old 10-24-2020, 10:08 AM   #4
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Default Re: Steering wheel turns light switch rod

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Originally Posted by masipopa View Post
Thank you Ray. So to install this bushing I will need to take apart light switch spider and bracket at the bottom of light rod, remove the light rod and put the bushing at the very top ?
Yep. With a sedan or open car you can do that pretty easily. If it’s a pickup or a coupe, you have to maneuver the steering column into a position that allows extraction of the rod, which usually requires removing the whole steering column.
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Last edited by 700rpm; 10-24-2020 at 10:13 AM.
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Old 10-24-2020, 10:43 AM   #5
katy
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Default Re: Steering wheel turns light switch rod

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If it’s a pickup or a coupe, you have to maneuver the steering column into a position that allows extraction of the rod, which usually requires removing the whole steering column.
Would it be possible to cut the bushing in 2, lengthwise, and slip the 2 pieces in?
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Old 10-24-2020, 10:56 AM   #6
Jim Brierley
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Default Re: Steering wheel turns light switch rod

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I had that problem when I switched to an F-100 steering gear box. The solution I found was to install a lighter spring down at the spider. I used a spring from a Bendix brake, the one that holds the shoes against the backing plate. An easy fix!
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Old 10-24-2020, 11:01 AM   #7
john charlton
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Default Re: Steering wheel turns light switch rod

These bushings are very cheap so buy a few and experiment. Could be you could cut one side and gently open it up. When you cut it cut the "return" at the top so the sleeve does not buckle .It might be you have the bush installed and the steering wheel hub is grabbing the light rod . I have had this problem and had to use a "dremel" abrasive wheel to slightly enlarge the steering wheel hole . I have done this several times over the years with different cars . I think this is most likely your problem .Just looked at one and it has a slit down one side anyway so maybe could open up gently I will try it .

John in very windy gusts to 50 MPH Suffolk County England .

Last edited by john charlton; 10-24-2020 at 11:32 AM.
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Old 10-25-2020, 02:46 PM   #8
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Default Re: Steering wheel turns light switch rod

Had a similar problem a few years back - the steering box had been overfilled with grease that had gone most of the way up the inner column causing a certain amount of "stiction" betwixt column and light rod.
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