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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Headlight switch fuse

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Old Apr 29, 2006 | 06:02 PM
  #1  
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rogerf100
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From: Owasso Oklahoma USA
Headlight switch fuse

Can someone tell me what size glass fuse goes on the back of the headlight switch for a 12v system? I have a new switch for a '56 but it did not come with a fuse for the interior lights.

Thanks
Roger
 
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Old Apr 30, 2006 | 04:09 AM
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I'm looking in my books, but can't find what size glass fuse it uses.

I'll keep looking.

BTW. Nice website on your 55 F100. I'm jealous.
 

Last edited by sierraben; Apr 30, 2006 at 04:15 AM.
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Old Apr 30, 2006 | 06:36 AM
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It has been a long time but if I remember correctly I used a 14amp fuse on mine...

Vern
 
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Old Apr 30, 2006 | 01:24 PM
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i just took mine to the auto parts store and matched the right size to fit, so far no problems.
 
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Old Apr 30, 2006 | 01:30 PM
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uk1050, I hope you're talking about matching the amperage size and not the physical size.
 
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Old Apr 30, 2006 | 06:40 PM
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uk1050, what amperage fuse did you use? The switch is rated for 12 amps but the fuse is just for the interior lights so I would expect it to me a much lower rating. Its to bad Ford did not put the info on the wiring diagram or in the shop manual. Even my Operator's Manual is silent on the subject.
 

Last edited by rogerf100; Apr 30, 2006 at 07:05 PM.
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Old Apr 30, 2006 | 07:51 PM
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I checked the wiring diagram and the head light switch. The only wire connected to the fuse is for the dome light. I verified this with an ohm meter for continuity checks from the B terminal (from the Battery) to each terminal on the switch. With the fuse out there is no connection to the dome light wire. All other connections work.

I have installed a new wiring harness with a fuse panel so the head light switch and its branch circuits will be protected by the fuse panel, unlike the original wiring.
 
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