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The several times I have had trouble with fusible links, when they went, they were not coming back on without a repair. They burned right through and in one case, more or less vaporized. I like fuses much better than fusible links, since they are lots easier to replace. It suspect that fusible links are cheaper than doing a proper fuse and block and the manufacturer are always looking for any way to save a penny. But I read somewhere that a fusible link can function as a kind of a "slow blow" fuse. I have usually been able to repair my damaged fusible links by soldering them together. After I found out why they blew in the first place. Making the fusible link a little shorter would change its capacity a bit, but usually the circuits I have been working on didn't usually carry nearly as much current as would make a difference--at least after I fixed the problem that caused it to blow in the first place. If I had a fusible link that blew over and over, I would check out everything the link powers. If I didn't find a problem with any component, I would consider removing some of those components and placing them on a different circuit to reduce the load on that fusible link. And if I made a new circuit, I would for sure include a proper sized fuse in it. A circuit breaker is another good option. But they are fairly expensive and usually are only used on circuits like the headlights, which really have to come on again soon after they have reacted to an overload. I have seen people "repair" blown fusible links with larger wire. It stopped the problem of the fusible link blowing, but probably reduced the protection to the wiring harness. A wiring fire will really get your attention!!!! A fusible link is there for a reason. Good luck!
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