I have 2 guage ran to the back to a distro with a fust block in it. a 100 and a 60. Do i need an inline fuse holder before the Distro? or will i be ok without 1
You must fuse the power wire that is connected to your battery.
The fuse is there to protect your car from catching on fire in the event of a short in the wire. It is imperative that the power wire be fused near the battery....as close as physically possible. "Rule of thumb" is within 18" of the battery, but that's basically a random number. Main thing is, you want as short of an unfused length of wire (the wire between the fuseholder and the battery terminal) as possible since this length of wire will still unprotected.