2057 bulb typical: 0.6 amps small filament 2.2 amps large filament
Don't know about your headlights. Add up the amps for all the loads that could be on at the same time (1 turn, 2 headlights, etc.)
Get a fuse that is rated 20% more than your total loads. 15 amps is typical for the lights on buggies but that is for standard lights and numbers of lights.
The fuse wire gauge is usually larger than the wires you are connecting it to because it is designed to handle the current rating of the fuse holder without burning up the wires. The max size fuse you can put in it is NOT necessarily the size you should use. Your load wires are smaller because they only need to pass the current the connected load will use. The fuse holder must handle all the current of all the connected loads.
If your total is 8 amps, use a 10 amp fuse, if 10 amps, use a 15 amp fuse (they don't make 12 amp ATO/ATC fuses). I think they come in 1, 2, 3, 4, 5, 7.5, 10, 15, 20, 25, 30, 40 & 50 amp sizes.
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