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02-04-2013, 07:17 PM
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#1
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New Member
Join Date: Jul 2003
Posts: 2
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Powering lift jack from my Jeep
Our 31-ft '84 excella has been sitting in one spot for a long time and we need to lift the power jack in order to move it. My question is -- if we connect hte 7-way power cord from the trailoer to the tow vehicle (a 2001 jeep), will that provide enough power to life the jack?
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02-04-2013, 08:12 PM
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#2
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Rivet Master
2006 23' Safari SE
Biloxi
, Mississippi
Join Date: Nov 2011
Posts: 8,278
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It is a 12 Volt DC jack, that is what your Jeep should be putting out if the plug is correctly wired.
__________________
MICHAEL
Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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02-04-2013, 09:09 PM
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#3
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Rivet Master
1974 Argosy 20
2014 20' Flying Cloud
Kooskia
, Idaho
Join Date: Jul 2009
Posts: 4,591
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The Jeep charge line has a circuit breaker (or maybe a fuse) which will limit the power that can go through the charge line. It may or may not have the necessary amp capacity to run the jack. The only way to tell is to try it.
If you still have the battery and converter/charger in the AS, it should run the power jack just fine. Even without the battery, the converter/charger will have capacity enough if it is plugged in to 120 volt power.
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02-04-2013, 10:32 PM
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#4
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3 Rivet Member
1977 31' Excella 500
Los angeles
, California
Join Date: Nov 2012
Posts: 201
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Question is WHY has it been sitting in one place for so long?!
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02-04-2013, 10:52 PM
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#5
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Rivet Master
2015 25' FB Eddie Bauer
2013 25' FB Eddie Bauer
2012 20' Flying Cloud
Small Town
, *** Big Sky Country ***Western Montana
Join Date: Feb 2010
Posts: 2,860
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Wouldn't try it as the load from the jack motor likely exceeds the wiring to plug / receptacle ... you might be able to sneak it by once or twice, but my guess is that it will blow the fuse - as the voltage goes down, current requirement goes up.
__________________
2015 25' Eddie Bauer Int'l FBQ / 2023 Ford Lightning ER
2022 Ford F350 6.2 V-8; equalizer hitch + Shocker air hitch
Honda Eu3200; AIR# 44105; formerly WBCCI 2015.1
Terminal Aluminitis; 2-people w/ 3+ dogs
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02-05-2013, 12:06 PM
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#6
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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Quote:
Originally Posted by Joy Quill
Our 31-ft '84 excella has been sitting in one spot for a long time and we need to lift the power jack in order to move it. My question is -- if we connect hte 7-way power cord from the trailoer to the tow vehicle (a 2001 jeep), will that provide enough power to life the jack?
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It depends, and the only way to find out for sure is to try it.
If the 7-way is wired properly at the Jeep and trailer then the charge line should be at least 10 gauge wire and should be fused for at least 30 amps -- more than enough to run the tongue jack, assuming that it's properly oiled or greased. But it's not unusual for the charge line to either be disconnected or not working. Most people don't check, and a few manufacturers (but not Dodge or Jeep as far as I know) leave it disconnected from the factory.
I would suggest bringing the crank along, or maybe an extra already-charged battery that you can install in the trailer.
__________________
To learn to see below the surface, you must adjust your altitude
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02-05-2013, 12:40 PM
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#7
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Rivet Master
2011 28' International
Chatham
, Ontario
Join Date: Dec 2010
Posts: 1,401
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If you're not sure, use the hand crank.
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02-05-2013, 12:42 PM
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#8
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Rivet Master
1960 28' Ambassador
Vintage Kin Owner
1998 25' Safari
Avonton
, Ontario
Join Date: Sep 2005
Posts: 1,331
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If there is no battery in the trailer, check that the positive cable for the battery is not touching anything metal or you will blow a fuse, as the truck line will put power to that cable
__________________
Doug & Terry
VAC - TAC ON-1
60 Ambassador Int.
1950 Spartan
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02-05-2013, 01:39 PM
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#9
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3 Rivet Member
1982 34' Limited
Harrowsmith
, Ontario
Join Date: Jun 2012
Posts: 142
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I've done that on mine successfully with no issue - just do as Shacksman suggests and make sure the positive cable for the battery is safe.
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02-05-2013, 01:40 PM
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#10
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Rivet Master
1988 32' Excella
Robbinsville
, New Jersey
Join Date: May 2012
Posts: 3,166
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If you are taking the trailer on the road you should have a battery for the break away switch to be safe and legal.
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02-05-2013, 04:58 PM
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#11
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New Member
Join Date: Jul 2003
Posts: 2
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Thanks to all of you for this helpful advice. My husband is still considering the best way to proceed. He asked me to post another question -- it's about the big 3-prong power cable that comes out of the rear of the trailer. Is there an adapter that would allow us to connect with a regular extension cord, which we could plug into household current?
The reason we haven't moved the trailer for a while is that we use the airstream as overnight accommodations for guess. They enjoy and everyone still has privacy.
thanks to everyone for your help. We really appreciate your advice and guidance!
Joy
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02-05-2013, 05:29 PM
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#12
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Rivet Master
2006 23' Safari SE
Biloxi
, Mississippi
Join Date: Nov 2011
Posts: 8,278
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Joy, you should be able to get a 30 or 50 amp (depending on what you have) to 15 amp adapter at any Walmart or RV/trailer/auto parts store.
__________________
MICHAEL
Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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02-05-2013, 05:37 PM
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#13
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2 Rivet Member
1973 29' Ambassador
Mercer Island
, Washington
Join Date: Aug 2012
Posts: 99
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Hi Joy,
Yes, there is an inexpensive adapter that will let you plug that three prong into a regular extension cord. Please note that you MUST open the batter box, make sure the battery is OK (or disconnect it and make sure the batter wires aren't touching anything) and then plug in the power. You are probably looking for something like this thing, but any local RV shop as well as wal mart, home depot, etc should have them for you. Amazon.com: Conntek 15 Amp Male Plug To 30 Amp RV Female Connector RV Adapter: Sports & Outdoors
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