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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Aug 2010 Posts: 255 'Bolter | | 'Bolter Joined: Aug 2010 Posts: 255 | Got my back up light mounted (Guide B-31), and a push/pull switch mounted to dash. Should I put a fuse in the circuit - and where (in the "hot" wire to switch, or between switch and lamp)? If a fuse is needed, what size or rating. I have a 6 volt system. Thanks in advance. | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | the factory accessory backup lites take a 9a fuse, so I'd think that'd be advisable - should go in the supply wire before the switch
Bill | | | | | Joined: Mar 2011 Posts: 457 Shop Shark | | Shop Shark Joined: Mar 2011 Posts: 457 | Yep, I agree with Bill. And, love your truck!
1940 Chevy 1/2 ton pickup "KC"
A day without sunshine is like, well, ..... dark!
| | | | | Joined: Aug 2010 Posts: 255 'Bolter | | 'Bolter Joined: Aug 2010 Posts: 255 | Thanks guys - wiring the light up without a fuse just seemed like "askin' fer trouble" - I will install an inline fuse as suggested. Thanks again. | | | | | Joined: Feb 2004 Posts: 29,760 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,760 | A fuse needs to be able to carry enough current to power whatever item is being operated, and have a low enough capacity to protect the wire in case of a short. The bigger the wire, the bigger the fuse can be. A 16 gauge wire should have a 10 amp or smaller fuse, while a #12 wire can go up to a 15 amp, 20-25 amp for a #10, etc.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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