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Old Nov 7, 2016 | 08:10 PM
  #1  
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Wire Size

My 99 F250 SD has a power point that uses a 25 amp fuse.

I am adding another power point, voltmeter and USB charging port.
I already have an 8 Ga wire from the battery to a fuse block.

I will use a 25 amp fuse to power all three.

I already have them daisy chained with 14 gauge wire.
Should I replace it with 12 Ga wire?
 
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Old Nov 7, 2016 | 09:51 PM
  #2  
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According to Tessco's amp & wiring chart you should be fine. Here's the link to their chart - Just scroll down a little:

https://www.tessco.com/yts/industry/...get_wired.html
 
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Old Nov 7, 2016 | 11:07 PM
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14 is way fine 16 will work.
 
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Old Nov 8, 2016 | 10:25 AM
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"Horn Button- 13 GAUGE"

I have never seen 13 Gauge wire, this must be from an averaging algorithm.
 
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Old Nov 8, 2016 | 10:45 AM
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Thank you for the link, I saved that on my phone, for future reference.
 
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