Fusible links

itbrokeagain · 12-31-2010, 06:44 PM

So the last day of the Rocked to the Core tour my Yj quit running. Finally figured out it was a bad ECU. Popped a new one in and it ran for about 20 min then it quit. Found 2 fusible links blown at the solonoid. I am thinking that using the starter to put my Jeep on the trailer heated up the links and they finally blew. Cut them out and put fuse holders in. It ran fine all day today with fuses. It only says 20 guage on the wire. Does anyone know what this equals in amperage for a fuse. I ran 10 amp fuses but I want to make sure it is right

WrenchMonkey · 12-31-2010, 08:10 PM

Good luck with that, Tony...

I searched forever trying to get a straight answer when I did my engine swap. I really wanted to do away with the FL's.

I ended up getting so much contradictory information that I just put the links back in.

Robert

superjeep · 01-01-2011, 12:35 AM

ten will be fine if you keep blowing that you can move up to twenty or twentyfive.

shawn

93 Krawler · 01-01-2011, 09:40 PM

A 20 gauge wire should have a 3 amp fuse. I know 14 gauge needs a 15, so a 20 g should be low. I found this: http://www.hotrodsandclassics.net/us...dfusequide.htm

Hope Springs Hauler · 01-01-2011, 10:19 PM

A 20ga fuseable link is not the same as a 20ga wire circuit. Like WrenchMonkey said, there is a lot of contradictory information out there.

This is one resource that I have found http://minimopar.knizefamily.net/electrical-links.html

93 Krawler · 01-01-2011, 11:04 PM

Quote:

Originally Posted by Hope Springs Hauler

A 20ga fuseable link is not the same as a 20ga wire circuit. Like WrenchMonkey said, there is a lot of contradictory information out there.

This is one resource that I have found http://minimopar.knizefamily.net/electrical-links.html

The original post said the wire was 20 gauge, and that he put a fuse holder inline. A 20 gauge wire can only handle 3 amps, so a 3 amp fuse would at least keep the wire from melting. Right?

Hope Springs Hauler · 01-01-2011, 11:58 PM

a 20 ga fuseable link is placed in a larger gauged circuit. The capacities that you have seen are the recommended current carrying capacities for the preservation of that wire. The fuseable link is placed in the circuit as a low sensitivity fuse to prevent the total meltdown of the entire circuit.

flatlander757 · 01-02-2011, 01:39 AM

Why don't you connect a DMM to it, and while you're cranking find out how many amps are going through the wire? Then get a fuse a few amps higher than that.

But hey... what do I know

itbrokeagain · 01-02-2011, 06:48 PM

Quote:

Originally Posted by flatlander757

Why don't you connect a DMM to it, and while you're cranking find out how many amps are going through the wire? Then get a fuse a few amps higher than that.

But hey... what do I know

Hmmm. Thats not a bad idea

itbrokeagain · 01-02-2011, 07:16 PM

Ok so I was thinking. I have never tried to do it and I dont have mine in front of me but will a DMM read amperage?

flatlander757 · 01-02-2011, 09:00 PM

Quote:

Originally Posted by itbrokeagain

Ok so I was thinking. I have never tried to do it and I dont have mine in front of me but will a DMM read amperage?

Mine will... shoot me a PM if you want to use it.

You put the meter's leads where it will read amperage, then disconnect the circuit and put the meter in-line ... the when you are using the circuit you monitor the current draw.

Hope Springs Hauler · 01-03-2011, 01:42 AM

The inline comment is totally key to getting the correct reading. Elsewise, you will get a really low amperage reading.

12-31-2010, 06:44 PM	#1
itbrokeagain Just Empty Every Pocket - CORE Member - Join Date: Feb 2007 Location: Amelia Posts: 1,435	Fusible links So the last day of the Rocked to the Core tour my Yj quit running. Finally figured out it was a bad ECU. Popped a new one in and it ran for about 20 min then it quit. Found 2 fusible links blown at the solonoid. I am thinking that using the starter to put my Jeep on the trailer heated up the links and they finally blew. Cut them out and put fuse holders in. It ran fine all day today with fuses. It only says 20 guage on the wire. Does anyone know what this equals in amperage for a fuse. I ran 10 amp fuses but I want to make sure it is right __________________ 91 fj 80 on 37 Nitto Muds with a 10k winch. Cage and sliders coming soon. Last edited by itbrokeagain; 12-31-2010 at 08:16 PM.

12-31-2010, 08:10 PM	#2
WrenchMonkey Mechanical Animal - CORE Member - - Moderator - Join Date: Feb 2008 Location: Beechmont Posts: 1,883	Good luck with that, Tony... I searched forever trying to get a straight answer when I did my engine swap. I really wanted to do away with the FL's. I ended up getting so much contradictory information that I just put the links back in. Robert __________________ DIRTY DEEDS, DONE DIRT CHEAP Whatever doesn't kill you makes you stranger

01-01-2011, 10:19 PM	#5
Hope Springs Hauler Join Date: Jul 2008 Location: Hamilton, OH Posts: 431 Images: 16	A 20ga fuseable link is not the same as a 20ga wire circuit. Like WrenchMonkey said, there is a lot of contradictory information out there. This is one resource that I have found http://minimopar.knizefamily.net/electrical-links.html __________________ 1988 Suzuki Samurai on propane FJ 40 axles (4.10) 5.14 tcase 36" TSL SX

01-01-2011, 11:58 PM	#7
Hope Springs Hauler Join Date: Jul 2008 Location: Hamilton, OH Posts: 431 Images: 16	a 20 ga fuseable link is placed in a larger gauged circuit. The capacities that you have seen are the recommended current carrying capacities for the preservation of that wire. The fuseable link is placed in the circuit as a low sensitivity fuse to prevent the total meltdown of the entire circuit. __________________ 1988 Suzuki Samurai on propane FJ 40 axles (4.10) 5.14 tcase 36" TSL SX

01-02-2011, 07:16 PM	#10
itbrokeagain Just Empty Every Pocket - CORE Member - Join Date: Feb 2007 Location: Amelia Posts: 1,435	Ok so I was thinking. I have never tried to do it and I dont have mine in front of me but will a DMM read amperage? __________________ 91 fj 80 on 37 Nitto Muds with a 10k winch. Cage and sliders coming soon.

01-01-2011, 12:35 AM	#3
superjeep Join Date: Jan 2007 Posts: 88	ten will be fine if you keep blowing that you can move up to twenty or twentyfive. shawn

01-01-2011, 09:40 PM	#4
93 Krawler >>>PMC<<< - CORE Member - - Administrator - Join Date: Sep 2010 Location: Ross, OH Posts: 2,069 Images: 1268	A 20 gauge wire should have a 3 amp fuse. I know 14 gauge needs a 15, so a 20 g should be low. I found this: http://www.hotrodsandclassics.net/us...dfusequide.htm

01-02-2011, 01:39 AM	#8
flatlander757 Fartface extrordinair Join Date: Aug 2010 Location: West Carrollton Posts: 127	Why don't you connect a DMM to it, and while you're cranking find out how many amps are going through the wire? Then get a fuse a few amps higher than that. But hey... what do I know

01-03-2011, 01:42 AM	#12
Hope Springs Hauler Join Date: Jul 2008 Location: Hamilton, OH Posts: 431 Images: 16	The inline comment is totally key to getting the correct reading. Elsewise, you will get a really low amperage reading. __________________ 1988 Suzuki Samurai on propane FJ 40 axles (4.10) 5.14 tcase 36" TSL SX

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