RTH Needed - Fusible Link off Positive Barrery Terminal

[Keyser Söze]

So... I blew one of the fusible links off of the end of the positive terminal on the battery. Spent half an hour with the dealership looking for the part number to no avail (maybe I am overlooking it as well).

So does anyone have the part number for the three wires below? (I know the blue one is bad... replaced with a home rigged Radio Shack "fusible link" - high gauge wire - but I am not sure I would trust it for very long) I worry the load I put on the other two has left them in sort of a weakened state.

Also, is the white wire a fusible link or something else (Have FSM but no EWD...)

If not does anyone have the gauge (OEM spec) or better yet a source for fusible link wiring?

BTW... dealership quoted me something like ~$300 for a new battery cable but wasn't sure if it contained the links or not...

 

[Tenzig Norgay]

Sorry for my ignorance, but is there really a fuse in the wires there, is that what a fusible link is? I've heard a lot about fusible links and them going bad, but have never had to deal with one. Can't you just get a new wire, hook it up to a new fuse, one where you could yank the fuse and stick a new one in, and call it good? Or is that stupid, like some of my other posts

 

[Keyser Söze]

It's not stupid... it's a thinner gauge wire with a little different insulation than the one you're protecting... it acts like a fuse though.

And that's exactly what I did to get it up and going again, threw some generic high gauge wire on there (though probably not what Mr. Toyota originally spec'ed... it just blew for a reason... and stopped the surge from damaging other (more expensive) things and I want to put that original protection back in place as it was intended.

 

[retrofive]

Yes, I have a part number, and yes I did run (before mud) just a 10g wire to keep me running for a awhile. (NOT recommended). I just bought a new one, but it was a spare for my truck and the wifey has it at work. If other dont chime in sooner I will get the PN when she gets home.

OR call CDan

 

[Tenzig Norgay]

Are fusible links safer, whats their benefit? At least with a traditional fuse you can just take it out and replace it. It just seems so many posters have probs, and it turns out to be fusible links. Why have them?

 

[retrofive]

A fusible link is essentially a "quick burn wire", The "3" wire fusible link in question goes from (crap dont' rememer off the top of the head) to the battery. If you have a fault the wire (fusible) with melt and burn off rather than frying your stuff

I know lame explanation but...

 

[Ebag333]

90982-08264
List: $12.69
cdan's price: $9.52

(As of 06/29/09.)

Carry one in your glove compartment. Mine hasn't gone out yet, but I keep a spare in my truck and in the . As retro said, you can use a thick enough wire as a stopgap measure. You could also wire in a fuse, but you would need to know what the fusible link is set to.

The fusible links are as cheap (if not cheaper) than a regular fuse, and certainly compared to a resettable fuse. You must have a fuse, so if you really hate the fusible links you'd need to find another (likely more expensive and complex) solution.

 

[retrofive]

90982-08264
List: $12.69
cdan's price: $9.52

(As of 06/29/09.)

Carry one in your glove compartment. Mine hasn't gone out yet, but I keep a spare in my truck and in the . As retro said, you can use a thick enough wire as a stopgap measure. You could also wire in a fuse, but you would need to know what the fusible link is set to.

The fusible links are as cheap (if not cheaper) than a regular fuse, and certainly compared to a resettable fuse. You must have a fuse, so if you really hate the fusible links you'd need to find another (likely more expensive and complex) solution.

Yep. Thanks Ebag for the PN , And this what my 10g wire looked like after frying + learning about the fusible link.

https://forum.ih8mud.com/80-series-tech/279630-electrical-issue-smoked-wire.html

 

[Ebag333]

And this what my 10g wire looked like after frying + learning about the fusible link.

https://forum.ih8mud.com/80-series-tech/279630-electrical-issue-smoked-wire.html

Winding that wire like that would have made it 100x worse. The longer the wire, the more resistance you have, the higher your chances of melting the insulation (if too much power is pumped through it). Additionally, the wire was wound against itself meaning the wire was dumping heat against itself, rather than out to open air. Being wrapped around another (bigger) wire wouldn't have helped any either, as you're dumping heat against....insulation. Much of which will reflect back and heat the wire even more.




Retrofive is incredibly lucky he did not have a car fire. Not only are there all sorts of potential stuff to go up in flames, but the battery was right there. If a battery vents fumes (which they all do, to an extent), and you have a heat source/spark/etc right there.....you have a recipe for a nice homemade explosion.


You can actually tell pretty well how long of a run that wire was good for. From the remains, I'm guessing maybe an inch or two. If you absolutely must run wire as a stopgap measure, go bigger, not smaller, and shorter, not longer.


And just for eye candy:
http://www.youtube.com/watch?v=Dj5or1jpOyo

Yes, the idiots threw the battery in the fire. I will say this though, the battery will not put out as much hydrogen gas as when it's charging. So assuming it wasn't way overcharged, that's actually not nearly as bad as it could have been....

 

[IdahoDoug]

Ebag,

Is that single part number for a kit of all three wires, or just for the blue one? I'm thinking I should order a set of three from Dan for all 3 80s....

DougM

 

[NLXTACY]

That part number is for all three wire bundles. I ordered one a month or so ago from CDan to keep as a spare as well.

BTW, the entire purpose for having fusible links vs. just using a fuse is that the fusible link won't burn up when there is a short duration high-amp draw. A fuse would just blow. When there is a consistent high-amp draw then the fusible link gets fried.

 

[NLXTACY]

Here are some pics of it

 

[Keyser Söze]

Thanks for the part number guys... I really appreciate it.

Great resource as always...

 

[CJF]

Are fusible links safer, whats their benefit? At least with a traditional fuse you can just take it out and replace it. It just seems so many posters have probs, and it turns out to be fusible links. Why have them?

At least a few folks here have had their butts and their ECU's saved by those links when they hooked up jumper cables backwards.

But yeah, it is outdated technology, and I don't think they're used anymore on newer vehicles.

Curtis

 

[retrofive]

For the record mine is all fixed up now and have a spare in the glove box , yes I was lucky....

 

[Aids10]

According to FSM & a AWG to Square mm Wire Gauge Conversion Chart-

OEM Main, AM1, & AM2 Fusible Links are 14, 16, & 22 wire gauges respectively

 

[arndog123]

Guess I have to add that part # to my list of things I need to buy.