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Which Fuses are constant or switched

Old 11-14-2017, 03:31 PM
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Post Which Fuses are constant or switched

Hey guys,
So I'm thinking of installing interior accent lights on my 2015 XLT F150, and i want to connect to the passenger compartment fuse box. It says I need a 10A fuse (preferably a constant power source). I looked at the diagram and it shows that Fuse 6-9 are spares and are 10A like I need, but I don't have the tools to see if they are constant or switched. Does anyone know for sure which one I should tap into with an expandable circuit? And if so should I use a mini expandable circuit or a low profile mini expandable circuit?

Thanks in advance
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Old 11-14-2017, 08:09 PM
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Don't have a '15 but by looking at the fuse diagram and testing the circuit, I can find whatever I need. Been doing this with several vehicles for years.

Buy one of these and go to town finding a fuse that fits your needs. It's only 8 bucks and the light glows when the fuse is in use, handy for many things


Another alternative is using a piggyback fuse tap if there is a fuse that is used but you want to use too.
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