I'm wiring up a 6 amp Sealand T 12 waste pump for my holding tank
discharge. I have a dedicated 10 AWG branch with a terminal block in
my head from my miscl. 12 volt circut off a 15 amp breaker at the
panel. It is a 4' run from the terminal block to the pump and I am
using 14 AWG.

I want to install a keyed switch for the pump and I have a Cole Hersee
10 amp on/off ignition switch that I want to use. Question A: Is the
switch appropriate? Question B: Should I fuse the leg between the
terminal block and the switch?