Suggestions/Comments RE: In-Line Fuse Holder Replacement

[moon]

Greetings, been off the board & hunkered down the last few years

A quick recap: This truck project I started in mid 2009 but had to suspend 8 months later due to separation/divorce. Among other things, I replaced both wire harnesses under the hood with aftermarket. I was just starting to put it all back together when the "stuff" hit the fan. It has been sitting for four years. Now, I am trying to pick up where I left off.

This particular problem is & has been with the two in-line fuses that are in the front (runs along the radiator/grill) harness. It's my understanding these are 4 amp fuses and the wires are 18 gauge, both running to the amp-meter. Those tiny glass fuses have always been a pain to remove on both the old & new harness. Yesterday I broke BOTH of those suckers off in the fuse holders & I can't the the remaining metal ends out of either. My plan is to replace both fuse holders with "water proof" in-line blade fuse holders.

Questions --->

- Is there any wiggle room with regard to the amp and AWG size of the holder? By that I mean can I get away with using a 5 amp fuse (easier to find than 4) and could I use a 16 gauge wire fuse holder (again easier to find than 18)

- What, if any, difference would it make to use an ATC (standard) or ATM (mini) blade.

I'd welcome any comments/suggestions about my "plan"

Please note: I am a novice.... but follow instructions pretty well.