Question about a old mad bypass repair

Yes thanks for all the info , o managed to locate 40 amp re-setable fuses that go into the ATO holder, supposedly they trigger slower than a conventional fuse I ordered a couple to try failing that I'm going to go with larger gauge wire and a maxi 50amp I'll post how it goes.
I don't know what is available today but I do know what was in my day and probably still available. There was a component for a fuse box that looked much like the lid from a Zippo lighter. 2 blades to plug it in. Cycling circuit breaker, it was called. They were used to disconnect a circuit/power supply when overheated and close again when cooled. We have a similar device built inside our headlight switch and our wiper switches too in some models. Those at wiper switch were moved to outside the switch in other models just like the one at/on a power top switch.
Enough history chit chat so on to my point... These heat sensitive devices have a limited life span. They will cycle properly for some number of times (God only knows) but eventually they will fail totally. Then open is open. Time to replace it.
So, let's compare it to a band aide in more ways than one. Buy them by the box full. LOL