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06-03-2018, 08:50 AM
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#1
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Junior Member
Join Date: Jan 2018
Posts: 16
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Electric tongue jack
My jack only works when plugged into shore power. Last year before storing it the jack would work when plugged into my TV. I've upgraded my TV since then but the jack doesn't work when I plug it in. My turn signals and brake lights work when I plug it up. Battery is fully charged. This is only our 2nd trip with this tt ansyonly thing I've changed is the TV. Any ideas on white start looking?
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06-03-2018, 08:56 AM
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#2
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Senior Member
Join Date: Jan 2016
Location: x
Posts: 12,423
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Not all TVs provide a 12V source from the trailer connection. If your jacks works when plugged into shore power but not when on battery then your battery is disconnected from your converter. Look for a disconnect switch some have a removable key and are hard to see.
__________________
Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
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06-03-2018, 09:01 AM
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#3
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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Also for most vehicles today, it needs to be running to provide 12 volts to trailer battery as there is a relay to prevent battery drain when not running.
__________________
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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06-03-2018, 09:01 AM
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#4
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Junior Member
Join Date: Jan 2018
Posts: 16
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Ok. Thanks. I'll have a look when we get it back home. Would this disconnect switch be at the converter or near the battery?
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06-03-2018, 09:12 AM
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#5
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Senior Member
Join Date: Jan 2016
Location: x
Posts: 12,423
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Quote:
Originally Posted by Ranger36
Ok. Thanks. I'll have a look when we get it back home. Would this disconnect switch be at the converter or near the battery?
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Normally they are mounted somewhere by the battery maybe under the propane tanks (how mine is) anyway look around.
__________________
Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
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06-03-2018, 09:16 AM
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#6
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Senior Member
Join Date: Feb 2015
Location: Southern, IL
Posts: 3,272
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Quote:
Originally Posted by Ranger36
My jack only works when plugged into shore power. Last year before storing it the jack would work when plugged into my TV. I've upgraded my TV since then but the jack doesn't work when I plug it in. My turn signals and brake lights work when I plug it up. Battery is fully charged. This is only our 2nd trip with this tt ansyonly thing I've changed is the TV. Any ideas on white start looking?
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What make is your tow vehicle? I bought a new 14 F150 and it came with a fuse in a bag that I found in the glove box. I had that same power issue until I had the dealer install the fuse. Seems it was meant to power the connector to the trailer.
Hope this helps...
__________________
Bob & Michelle
2016 Ford F-250 Lariat 4x4
2017 Flagstaff Super Lite 526RLWS
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06-03-2018, 09:25 AM
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#7
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Site Team
Join Date: Oct 2014
Posts: 15,294
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Depending on the make of your TV, you will need either a fuse or a fuse and a relay installed in the fuse box. These are usually provided as mentioned above, but not installed. If you have both a relay and a fuse, then the aux pin will only be powered when the ignition is on. This prevents killing the TV battery if you remain connected for a period of time.
__________________
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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06-03-2018, 09:30 AM
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#8
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Senior Member
Join Date: Dec 2013
Posts: 152
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It should work off the tt battery
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06-03-2018, 10:27 AM
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#9
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Junior Member
Join Date: Jan 2018
Posts: 16
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Quote:
Originally Posted by Wobbles
What make is your tow vehicle? I bought a new 14 F150 and it came with a fuse in a bag that I found in the glove box. I had that same power issue until I had the dealer install the fuse. Seems it was meant to power the connector to the trailer.
Hope this helps...
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Wobbles, I have a 2014 GMC Sierra SLT 1500 Crew cab 4x4. My old TV was a 2007 Chevy w/t 1500 crew cab. I left my owner manual at the house. I'll Google it and see if mine takes a fuse. Still it should work off the TT battery. Everything else does.
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06-03-2018, 10:46 AM
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#10
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Junior Member
Join Date: Jan 2018
Posts: 16
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Fuse block had a diagram of what fuse goes to what. I have a separate fuse for TT battery and TT brake, both a 30 amp mini block fuse. The one to the TT battery was blown. Now when I get home I'll see why it won't work on the TT battery when I'm unhooked. Thanks for the help y'all!
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06-03-2018, 04:57 PM
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#11
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,797
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Quote:
Originally Posted by Ranger36
Ok. Thanks. I'll have a look when we get it back home. Would this disconnect switch be at the converter or near the battery?
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It would help if you posted year/make/model of RV since it's not listed in your profile.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.) 
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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06-03-2018, 05:18 PM
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#12
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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Quote:
Originally Posted by bikendan
It would help if you posted year/make/model of RV since it's not listed in your profile.
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From some of his previous posts:
2014 grey wolf 26dbh
__________________
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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06-03-2018, 05:51 PM
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#13
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,797
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Quote:
Originally Posted by fonzie
From some of his previous posts:
2014 grey wolf 26dbh
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Well Grey Wolf TTs don't come with battery disconnect switches. Unless someone installed a battery disconnect switch, his TT doesn't have one.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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06-04-2018, 04:08 PM
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#14
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Junior Member
Join Date: Jan 2018
Posts: 16
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Sorry, I didn't realize it wasn't in my profile. The original owner didn't do any mods to this TT. The blown fuse on my TV didn't solve the problem.
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06-06-2018, 09:51 AM
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#15
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Junior Member
Join Date: Jan 2018
Posts: 16
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Problem solved. Someone had the plug on my truck wired wrong. The center pin labeled "backup lamp" had continuous power to it while the + pin had no power. So I put the truck in reverse and the + pin had power. Now I just gotta swap the wires in the harness around and I'm good to go! Thanks for the help y'all I really appreciate it!
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06-06-2018, 10:28 AM
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#16
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Senior Member
Join Date: Apr 2016
Location: Cedar Creek Lake, TX
Posts: 3,484
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It should work off the TT battery. Check the circuit breaker on the main power cable from the battery.
__________________
Cedar Creek Lake, Texas
2019 Keystone Loredo 290SRL
2019 Ram 2500 4x4 Cummins crew cab
Andersen hitch
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06-06-2018, 10:31 AM
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#17
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Junior Member
Join Date: Jan 2018
Posts: 16
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Quote:
Originally Posted by CedarCreekWoody
It should work off the TT battery. Check the circuit breaker on the main power cable from the battery.
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I had a bad battery too. But the big problem was I had no power going from my truck to the TT battery. Solved that problem this morning.
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06-06-2018, 10:50 AM
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#18
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Senior Member
Join Date: Apr 2016
Location: Cedar Creek Lake, TX
Posts: 3,484
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The truck doesn't really supply enough amperage to reliably operate the tongue jack. You need a good battery and/or shore power.
__________________
Cedar Creek Lake, Texas
2019 Keystone Loredo 290SRL
2019 Ram 2500 4x4 Cummins crew cab
Andersen hitch
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