What does fuseable link do? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RShaips · 01-07-2010, 08:24 PM

I took my fuseable link apart a month ago, and the fuse was stuck and rusted inside. I have not replaced it yet, what exactly does it do, My battery will go dead after several days of sitting, but i am not sure this has anything to do with it . I just have not found a small fuse yet to replace it. thanks

**john** · 01-07-2010, 08:37 PM

Is it the short 4-amp fuse in the little bullet like holder? If it, is for the ammeter.There should be one close to the batt and another on the driver side.

mbgmike · 01-07-2010, 08:41 PM

Its a circuit protection for the electrical system. Think of it sort like a circuit breaker. In fact they have been replaced by circuit breakers on a lot of vehicles. Many people still prefer them. When the circuit gets too hot they will burn up/melt and hopefully protect the system.

Anyone who sells Bussman products should have the size. I would only use Bussman and never a foreign made one cause of the part history with the foreign made fuses and links. Just about two years ago their were a lot of TSB going around about them

68gmsee · 01-07-2010, 08:43 PM

I replaced mine with a fuse many years ago and it worked fine. I did a quick search and basically found that they're used the same as a fuse but for higher amperages. Generally 30 amps or higher.

Most recommend to replace them with the same fusible link for better protection.

68gmsee · 01-07-2010, 08:46 PM

forgot to add the link...

http://alanhorvath.com/54chevy/fusible_links.php

RShaips · 01-07-2010, 09:41 PM

Mine is by the battery in the black rubber holder, anything to do with battery going dead? Thanks

Longhorn Man · 01-07-2010, 09:55 PM

thats a fuse, not a fuseable link.
Look in the FAQ in the electrical section, there's a thread on how to find a battery drain

pritch · 01-07-2010, 10:37 PM

Quote:

Originally Posted by Longhorn Man

thats a fuse, not a fuseable link.

You know, I never really thought about it until I read that, but isn't there some kind of resistance wire that must be in place before the ignition will work? I have always called that 'the fuseable link' but now I'm thinking that's not right. Does that make sense?

Longhorn Man · 01-07-2010, 11:31 PM

in most older cars, they had a ballast resisterr, on these trucks, a resister wire.
Nothing like a fuseable link.
a fuseable link is a section of wire that will burn before the rest of the harness is damaged due to a short to ground or if something is causing too many amps to be drawn through the system. On 67 - 72 trucks, it is a piece in the harness between the battery and the junction post on the fenderwell. On many later GM cars and trucks, it was on the large post of the starter where the harness picked up batterry power to run the rest of the vehicle.

pritch · 01-08-2010, 12:03 AM

Yeah-that's the thing I thought it was, I just always called it the wrong name for some reason. Thanks for clearing that up for me.

Wrenchbender Ret · 01-08-2010, 03:21 PM

The rubber fuse holders are for the ammeter. A problem with them will not drain the battery. You can replace a corroded one with a universal in line fuse holder. Use a 4 amp fuse in it. There is another one in the circuit also. If the amp. meter is working it will go down a little when you turn on the lights.

01-07-2010, 08:24 PM	#1
RShaips Senior Member Join Date: Jun 2002 Location: Augusta Missouri Posts: 804	What does fuseable link do? I took my fuseable link apart a month ago, and the fuse was stuck and rusted inside. I have not replaced it yet, what exactly does it do, My battery will go dead after several days of sitting, but i am not sure this has anything to do with it . I just have not found a small fuse yet to replace it. thanks

01-07-2010, 08:37 PM	#2
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: What does fuseable link do? Is it the short 4-amp fuse in the little bullet like holder? If it, is for the ammeter.There should be one close to the batt and another on the driver side. __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

01-07-2010, 08:41 PM	#3
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: What does fuseable link do? Its a circuit protection for the electrical system. Think of it sort like a circuit breaker. In fact they have been replaced by circuit breakers on a lot of vehicles. Many people still prefer them. When the circuit gets too hot they will burn up/melt and hopefully protect the system. Anyone who sells Bussman products should have the size. I would only use Bussman and never a foreign made one cause of the part history with the foreign made fuses and links. Just about two years ago their were a lot of TSB going around about them Last edited by mbgmike; 01-07-2010 at 08:43 PM.

01-07-2010, 08:43 PM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: What does fuseable link do? I replaced mine with a fuse many years ago and it worked fine. I did a quick search and basically found that they're used the same as a fuse but for higher amperages. Generally 30 amps or higher. Most recommend to replace them with the same fusible link for better protection.

01-07-2010, 08:46 PM	#5
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: What does fuseable link do? forgot to add the link... http://alanhorvath.com/54chevy/fusible_links.php

01-07-2010, 09:41 PM	#6
RShaips Senior Member Join Date: Jun 2002 Location: Augusta Missouri Posts: 804	Re: What does fuseable link do? Mine is by the battery in the black rubber holder, anything to do with battery going dead? Thanks

01-07-2010, 09:55 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What does fuseable link do? thats a fuse, not a fuseable link. Look in the FAQ in the electrical section, there's a thread on how to find a battery drain

01-07-2010, 11:31 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What does fuseable link do? in most older cars, they had a ballast resisterr, on these trucks, a resister wire. Nothing like a fuseable link. a fuseable link is a section of wire that will burn before the rest of the harness is damaged due to a short to ground or if something is causing too many amps to be drawn through the system. On 67 - 72 trucks, it is a piece in the harness between the battery and the junction post on the fenderwell. On many later GM cars and trucks, it was on the large post of the starter where the harness picked up batterry power to run the rest of the vehicle.

01-08-2010, 12:03 AM	#10
pritch Registered User Join Date: Mar 2004 Location: Hoytsville, Utah Posts: 3,365	Re: What does fuseable link do? Yeah-that's the thing I thought it was, I just always called it the wrong name for some reason. Thanks for clearing that up for me. __________________ '68 Panel Project Boogie Chillin' '68 C-10 Ol' Green

01-08-2010, 03:21 PM	#11
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,228	Re: What does fuseable link do? The rubber fuse holders are for the ammeter. A problem with them will not drain the battery. You can replace a corroded one with a universal in line fuse holder. Use a 4 amp fuse in it. There is another one in the circuit also. If the amp. meter is working it will go down a little when you turn on the lights.



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