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i just realized i never fused my hood light, would a 5 amp be fine? and can i use a mini one?

 
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watts= volts X amps
so if you know your headlight's wattage. There you go...

 
Rep Power: 812

ah okay looks like 1 amp is fine.

 
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I'd probably go a little higher just for safe measure, but w.e.

 
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what size wire did you use? that's the main thing.

 
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yeah i guess watts = VxA only if the wire is big enough not to have substantial resistance

 
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not even a matter of resistance. you fuse a system so that the current doesn't exceed the rated capacity of the wire. that determines the max fuse. you can always go smaller to protect the components, but the max is determined by the wires used.

 
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oh hmm i think 14 or 16 gauge? it was way bigger than it needed to be.

 
Rep Power: 252

yeah. usually 20awg is big enough for like ... 3 or 4 amps on 12V