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reverse lights blowing fuse

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Old Jan 16, 2014 | 06:37 PM
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reverse lights blowing fuse

My 2005 f350 reverse lights just started to not work . So I checked the fuse and it was blown and every time I put new fuse in it blows any idea where to check. Sounds like a ground issue am I correct .
 
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Old Jan 16, 2014 | 06:45 PM
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Do you have a trailer light plug? I would start there, checking it for corrosion, dirt or ice. Sounds like you have a short in the reverse light circuit.
 
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Old Jan 16, 2014 | 06:49 PM
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It is a short circuit, of course, that's why fuses blow.

When does it blow?
 
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Old Jan 16, 2014 | 11:56 PM
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Our 99 always blew the 10 amp reverse light/ brake-shift interlock fuse. I replaced it with a 15 amp fuse and it hasn't blown since. Going up one rating won't usually harm anything. If there is a short it will blow it again. Then you got a problem.
 
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Old Jan 17, 2014 | 01:06 AM
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From: Spanaway
Originally Posted by 351Cleveland C4
Our 99 always blew the 10 amp reverse light/ brake-shift interlock fuse. I replaced it with a 15 amp fuse and it hasn't blown since. Going up one rating won't usually harm anything. If there is a short it will blow it again. Then you got a problem.
That is a +50% up rating and can cause problems.

To the Op pull the tail lamp housings and have a look at the lamps.
You can also check to make sure that the sockets are dry. I had one
on a different Ford truck that would get wet and blow fuses.

Sean
 
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