Lighting Fuse Rating

I put a 20 amp inline fuse near the starter solenoid on the hot wire, and I am planning on another for the lights. Is ten amps enough for two headlights, a work light, and a tail lamp? April 13, 2015.

These tractors use a 20 amp fuse for the lights. No fuse is normally used in the electrical system. I don’t have a reason for adding a fuse to the tractor wiring.