The Stovebolt Site Forums The Shop Area The Electrical Bay what amp fuses needed?

hi all, I have a '53 3100. it is now 12v with all standard bulbs, no LED lights. left and right tail lights, dual filament park lights. I have a signal stat 900 switch in it. I am putting an in-line fuse before the switch and I can't find info on what amp fuse to use, so what size fuse should I protect the blinker system with? also, being that it is now 12v, should I replace the 20 amp fuses for the tail and stop lights with 10 amp fuses? thanks in advance (design)!