Fuse/Fusible link in wire from alt to batt?
 

What are you using to protect this circuit? Are you using a fusible link, or a regular fuse, or something else?

I may need to change some wiring. I have a wire from BATT+ to the charging post of the alternator & from there to the GMPP harness fuse box. And in this fusebox I have added a circuit for the cooling fan. Not exactly sure yet how much amps it pulls, 50ish(?).

So if I put a fusible link near the battery in this circuit, will the cooling fan kill it?

I wired my fusible link from alternator to megafuse then on the other side I have wire to fuse box, I then ran another wire from the alt side of the mega fuse to a power dist block. I pulled power off of this and have two relays for the fans with fuses inline. I think it may be to much to pull through the fuse box. Just a free non educated guess, If you hook it up and it smokes,, Hurry and disconnect it.. Maybe look on Painless or American Autowire for some more info.

I ordered one of these mega fuse holders & a 175 amp fuse.

http://ecx.images-amazon.com/images/I/41-oL%2B7TAPL.jpg

That's what I have, I am still learning the electrical.. I think your on the right track.

Maybe I'm misreading it, but from the sounds of it you have two forms of protection inline with each other on the same wire???
Alt----FL----Fuse-----battery------fuseblock


The two provide the same type of protection but with different applications.

The fusible link works like a slow blow or time delayed fuse. It allows you to hit the max amperage and stay there for a rated amount of time. Also, due to the slow action, it can handle some over current as well. This makes them less prone to burning out.

Your normal fuses are fast acting, so once they hit the rated amperage... pop. Not unreliable by any means, but their priority is the protection of electronics.


The fusible link should go near the battery for both easier access and to keep it away from direct engine heat. If your fuseblock doesn't have a large main fuse you'll want to use that maxi fuse to protect that portion of your electrical system.

ALt-----FL--Batt---fuse---fuseblock

Personally, I like to have the big fuse close to the battery as well. I'm not a fan of leaving a long section of a high current conductor unprotected but there's nothing written in stone.

Im not goiing to use the fusable link, instead going to use the mega fuse mounted within a foot from the battery.

I'm also at the wiring stage, battery in trunk. my plans are to place a 175amp mega fuse close to battery on seperate + wire that will lead to fuse box and thinking about running a fuse link on the ground side for the rest of the wiring.