| Isolator Jumper Cable [message #367501] |
Fri, 05 November 2021 10:08  |
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SteveW
Messages: 538
Registered: June 2005
Location: Southern California - Ora...
Karma: 1
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Senior Member |
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Greetings from Southern California !!
Even though I have a non-momentary battery boost switch (1973) - I'm planning to carry a small isolator jumper kit to mitigate an alternator failure.
(Jumper top and bottom pins of isolator and run generator).
I'm probably gonna cobble one together this weekend and intend to put an inline fuse in it.
Would anyone like to suggest the proper fuse size ??
Thanks in advance for your suggestions and for all of the expertise that's shared here.
Steve W
Southern California
1973 23 Yellow
Steve W
1973 : 23'
Southern California
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| Re: Isolator Jumper Cable [message #367503 is a reply to message #367501] |
Fri, 05 November 2021 12:10  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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If your system is stock, it’s breakered from factory at 50A near house battery. My answer would be use same or one gauge thinner than the 3 wires on the isolator.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Isolator Jumper Cable [message #367507 is a reply to message #367503] |
Fri, 05 November 2021 13:11 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Why are you jumpering the isolator? It sure is not for starting current? If it is to keep the engine battery charged and to run the ignition and other routine stuff, then 15 or 20 amps ought to be enough. The fusible link that runs the whole coach is only 16 gauge.
I have several of those made up and they are a simple 6" pieces of wire with 2 alligator clips. No fuse. If you have a problem the 16 gauge wire will simply burn in half just like a fuse or fusible link would. If you want you could just get a couple of pieces of 16 ga. fusible link wire from the auto parts store and make a couple of jumpers out of that. Cost is round $3.00 plus 2 alligator clips. Use some good quality alligator clips.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| [GMCnet] Re: Isolator Jumper Cable [message #367512 is a reply to message #367508] |
Sat, 06 November 2021 19:01 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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My jumper of 35 years lost contact and my engine battery went dead,
Wasted time thinking the battery terminal was dirty,
Use my Aux switch and started it.
On Fri, Nov 5, 2021 at 11:49 AM Matt Colie wrote:
> Steve,
>
> Yours is a 23 - 73 just like mine. There is little chance that the "One
> Dollar Combiner" can get away from you. Making one up that is long enough
> to
> include a fuse will make it long enough to be dangerous. Just put it
> together and remember when you have it on (which should be vary rare) to
> take it
> off.
>
> I do often deploy mine when the coach is in the barn for the winter so I
> don't have to worry about the engine battery. I have another for the
> generator battery.
>
> Matt
> --
> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
> GMCES
> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
> Brakes with Applied Control Arms
> SE Michigan - Near DTW - Twixt A2 and Detroit
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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