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12-31-2014, 03:04 PM
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#1
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Junior Member
Join Date: Aug 2014
Posts: 18
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Temporarily Powering a 5th Wheel from a tow vehicle.
In the winter I remove both batteries from my 36CKTS.
I thought for the few winter inspections I make at the storage facility I would just plug the tow power cable from the 5th wheel into my tow vehicle to provide power for lighting only. When I attempted this the interior lights didn't come on. The battery disconnect switch was in the ON position. I have not had time (and it's too cold) to trouble shoot.
Shouldn't what I tried work?
The tow vehicle charges the batteries successfully when towing.
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12-31-2014, 03:08 PM
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#2
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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Did you leave your tow vehicle running when trying the lights? Maybe it needs to run....also are all your 12 volts cables connected together at the battery box eg: all positives together and all negatives together?
__________________
Fonzie
2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2019 F350 Ruby Red 6.7l diesel 3.31 axle electronic locker
Yamaha 3000iseb generator:Progressive Ind. EMS-HW30C : Eastern Ontario
Nights Camped: 2014 (18) 2015 (18) 2016 (36) 2017 (32) 2018 (42) 2019 (28) 2020 (35)
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12-31-2014, 03:47 PM
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#3
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Moderator Emeritus
Join Date: Sep 2007
Location: Ontario, Canada
Posts: 4,327
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Another thing to check is if you have the relay or fuse installed in the truck to provide 12V power at the 7 way plug. Easiest way is to check at the truck's plug for 12V power between pin 4 and pin 1 (ground) with the truck running.
Dave
__________________
Nights camped in 2013 - 55, 2014 - 105, 2015 - 63
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12-31-2014, 04:21 PM
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#4
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Junior Member
Join Date: Aug 2014
Posts: 18
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Thanks for the suggestions. The battery cables for both batteries are isolated (insulated) during storage.
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12-31-2014, 05:49 PM
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#5
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Senior Member
Join Date: Nov 2014
Posts: 1,179
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Cant do it! Charge line only supplies minimal current to recharge the house battery while under way. Leaving it connected without a battery in place does not complete the circuit for lights. Take a battery with you and if nothing else using jumper cables connect it. Take it home with you when your done
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12-31-2014, 07:10 PM
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#6
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Senior Member
Join Date: Dec 2011
Location: Kansas City & Sierra Vista
Posts: 247
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Guess it must depend on the unit. I store my battery on a trickle charger in the garage over the "winter" here while at our winter home in southern Arizona. The trailer is at a storage unit without power. Lights and slides operate when plugged into the 7 pin off the truck. Slides are a little slower maybe, but they work!
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Jim & Kathy
2012 Crusader 290RLT TE, TrailAir flex pin: 2012 Toyota Tundra 5.7 SR5 Dbl cab 4X2 Tow, 4.30 gears, RideRite air, TRD cold-air induction & dual exhaust: Reese 16K Slider: TST tpms
Miles towed to date: 26,890; Nights camped; lost count!
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12-31-2014, 07:13 PM
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#7
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Senior Member
Join Date: Dec 2013
Posts: 806
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Ours will power up also, truck must be running but that is how we winterized, off the truck 7 pin.
__________________
2006 2500HD CCSB 2WD 2014 Crusader 285RET
Nights camped in 2013 - not enough!, 2014 37, 2015 40, 2016 39, 2017 38, 2018 36, 2019 37, 2020 26, 2021 28
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12-31-2014, 09:02 PM
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#8
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Senior Member
Join Date: Sep 2012
Location: Mass
Posts: 532
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Should it work - yes.
Sounds like a wire is not connected, possibly a ground wire from the pigtail into the rig.
It should provide basic lights, might operate the slides on a good day, and some leveling systems. The size wire for the "charge" line in a tow vehicle is too small to provide much (even for charging really) power to the camper. Again it should work just be careful with the power use.
Using a volt meter check the power at the battery terminals - should be 12 Volts. If not check power at the plug.
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Walter & Donna
2011 CC LB RAM 3500 CTD 6.7L DRW
2013 Cedar Creek 38FL
2017 Days Planned: 135
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01-01-2015, 11:31 AM
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#9
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Member
Join Date: Feb 2013
Posts: 89
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Quote:
Using a volt meter check the power at the battery terminals - should be 12 Volts. If not check power at the plug.
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OK, I think the OP said his batteries are removed from the coach and are in his garage back home. In my CC, the battery has to be installed (or at least in the circuit) for this to work. The 12V lights are operated from the battery. Plugging in my truck without the battery installed will not power the lights. It will however, slowly charge the battery if it is installed. So, at least for me, donniedu is right. Some of the responders in this thread are not CC owners and the OP is.
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Skip & Susan Orrell
Hurst, Texas
2013 34 RLSA w/ most of the options
2013 Chevy 3500HD, D/A, DRW, 4X4
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01-01-2015, 11:47 AM
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#10
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Senior Member
Join Date: Nov 2012
Location: Carstairs Alberta Canada
Posts: 314
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I also need a battery installed for anything to work in my unit.
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Tim and Bev
2013 Cedar Creek 34RLSA gone trying to find my way back, Magnum 2800w inverter, 560w of solar.
2020 F-350
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01-01-2015, 11:52 AM
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#11
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Senior Member
Join Date: Apr 2014
Location: Kenmore, NY
Posts: 110
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You need the batteries installed...
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01-01-2015, 01:22 PM
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#12
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Senior Member
Join Date: Nov 2011
Location: Chenango County NY
Posts: 172
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Temperory Power
How about taking jumper cables and connecting to the truck battery and to the battery cables on the rig?? Frank
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01-01-2015, 01:38 PM
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#13
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Senior Member
Join Date: Apr 2014
Location: Kenmore, NY
Posts: 110
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Quote:
Originally Posted by Eaglelover
How about taking jumper cables and connecting to the truck battery and to the battery cables on the rig?? Frank
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That may work also,
Thanks Frank
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01-01-2015, 01:41 PM
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#14
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Member
Join Date: Feb 2013
Posts: 89
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I'd think that would work but the OP stated he has isolated and insulated his battery cables (IOW wrapped them in tape?). So probably too much trouble. But a good flashlight would work.
__________________
Skip & Susan Orrell
Hurst, Texas
2013 34 RLSA w/ most of the options
2013 Chevy 3500HD, D/A, DRW, 4X4
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01-01-2015, 05:03 PM
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#15
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Junior Member
Join Date: Nov 2014
Posts: 1
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Mine is in storage right now, i use the truck to power the slides, and the onboard for the interior light(also recharges the units batts .leave it running) works great. If i just try to use coach batteries to open it up for inspections and just general cks it drains them quick. But i have to have the batteries installed to and switched on for the lights. only runs the Slides
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01-01-2015, 08:10 PM
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#16
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Junior Member
Join Date: Dec 2014
Posts: 3
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using the slides w/o batteries
A master tech told me the main cause of slide failure is caused by operation with low power. IOW, low or no batteries. The converter doesn't provide enough power. They may move, but they are being damaged. Like running the A/C on only 20 amps.
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01-01-2015, 10:08 PM
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#17
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Senior Member
Join Date: Nov 2012
Location: Carstairs Alberta Canada
Posts: 314
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Any time you use any electric motor with lower than recommended voltage you run the risk of damaging it.
__________________
Tim and Bev
2013 Cedar Creek 34RLSA gone trying to find my way back, Magnum 2800w inverter, 560w of solar.
2020 F-350
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01-29-2015, 12:27 PM
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#18
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Senior Member
Join Date: Jan 2015
Location: Kansas
Posts: 1,272
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For those of you who when in storage operate slides solely off your pigtail connected to the truck ... you're putting an insane current draw upon a 14 gage (maybe 12 gage) charging wire on your tow vehicle. That's why it is s-l-o-w moving and lights dim down. It doesn't do your pump motor any good. I'd bet you could barely touch the TV charging wire with a bare hand after opening the slides.
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