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10-14-2016, 04:24 PM
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#1
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Junior Member
Join Date: Sep 2016
Posts: 18
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No 12 volt power on trailer
I have a 2016 26bhxl and when I plug it into the back of my 2013 Ford F-150 I dont have any power to my jack or anything. I have power going to the plug on my truck but when I plug the trailer into it I only have brakes and lights. I have checked all the fuses that I can see inside the converter box and on the power tongue jack and they are all good I checked the battery cables going to my box on the trailer and don't have any volts at all. What do I need to be looking for. Everything works when I am plugged into a landline though
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10-14-2016, 04:33 PM
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#2
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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What you described is a dead battery or one that has not been charged for a long time.
With nothing hooked up to the trailer you need to see if you have 12 volts or more at the battery.
When you are plugged into the campground power you are getting power from your battery charger and not the batteries.
I still think you have a bad battery or you are missing something like a power switch that puts the battery into the system.
Good Luck
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10-14-2016, 04:42 PM
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#3
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Senior Member
Join Date: Apr 2013
Location: Central New York
Posts: 1,165
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If you have good voltage on the battery, check for a resettable breaker or a fuse in line near the tongue. Almost all new trailers have one - but they aren't always in the exact same spot. Should be under the tongue or just under the front of the trailer. Follow the positive back from the battery.
__________________
2022 Columbus 379MBC (Previous 2013 Rockwood Roo 23 IKSS)
2023 F-350 (Previous 2017 F250, 2005 F-150)
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10-14-2016, 08:43 PM
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#4
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Junior Member
Join Date: Sep 2016
Posts: 18
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I do not have a battery on it yet. But when I first got the trailer I was pulling it with a 05 Dodge Durango and the jack and everything worked without a battery in it and plugged into the Durango so could it be something else it worked while plugged into a Tahoe as well
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10-14-2016, 09:06 PM
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#5
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Senior Member
Join Date: Jun 2013
Location: Brazoria County, Texas
Posts: 1,460
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Search online for Ford towing connections. I believe you may have a fuse or something that needs to be done to get power to the charging line on the trailer connection. You may have power to everything but the charge line which would explain why you have lights but nothing else.
Regardless, get a battery on that thing so your breakaway switch will function.
__________________
2015 Chevy Silverado LTZ - HD tow package
2017 Rockwood 2703WS Emerald Edition
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10-14-2016, 09:48 PM
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#6
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Senior Member
Join Date: Aug 2015
Location: South West Michigan
Posts: 187
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The fuse & relay on my 2013 F-150 that allow power to go to the trailer were not installed when I bought my truck. The fuse & relay were in a plastic bag in the door compartment. I don't recall which positions in the fuse box under the hood that the fuse & relay needed to be inserted but, check your owners manual for where they go and either in your glove box or door compartment for the for the fuse & relay. As someone else said "get a battery in that trailer so your breakaway switch is operating".
__________________
2015 Flagstaff 8528IKWS Diamond Package
2013 Ford F-150 Super Crew, EcoBoost, Max Tow,
6.5 bed, Roadmaster Active Suspension, E rated tires
98 days camping 2017 98 days camping 2018
94 days camping 2019 49 days camping 2020
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10-14-2016, 10:33 PM
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#7
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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Quote:
Originally Posted by jschmidt
I do not have a battery on it yet.
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Funny you left this important bit of information out in your original statement.
As you can see in this picture Terminal 4 from the truck should be 12 VDC + for charging.
Also if your Positive battery cable is touching the frame of the trailer (Ground) it would blow the fuse in the truck for that charging circuit.
Good luck.
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10-14-2016, 11:25 PM
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#8
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Junior Member
Join Date: Sep 2016
Posts: 18
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No 12 volt power on trailer
I have 12 volts at the plug on my truck when I checked it with my meter and the battery terminals are tapped so the won't short out if they hit the frame i plugged the trailer into my truck and checked for voltage where the battery cables are mounted underneath the front of the camper and have 0 volts with my meter when hooked up to positive and negative cables. I am waiting on the box to put a battery in to come in
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10-14-2016, 11:46 PM
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#9
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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Quote:
Originally Posted by jschmidt
I have 12 volts at the plug on my truck when I checked it with my meter and the battery terminals are tapped so the won't short out if they hit the frame i plugged the trailer into my truck and checked for voltage where the battery cables are mounted underneath the front of the camper and have 0 volts with my meter when hooked up to positive and negative cables. I am waiting on the box to put a battery in to come in
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That told me a lot. Thanks
Now what I would do is trace the #4 wire from the trailer plug back into the trailer and see where it is attached.
At this point I would think it attaches to obviously a Positive DC point in the trailer.
My guesses this wire can be attached someplace where the Positive battery cable is located on the trailer.
Or
It goes all the way back to your DC battery circuit breaker panel inside.
That is the best I can tell you at the moment.
I will do some more research and see if I can find out where it goes by searching the web.
Good luck
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10-14-2016, 11:59 PM
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#10
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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BY any chance do you have any switch that may look like this in the battery compartment area?
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10-15-2016, 12:01 AM
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#11
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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Here is a basic diagram how you get battery power from the truck to the Battery in the trailer to charge it while on the road towing.
The only other thing we have to make sure is that the Ground wire from the truck is hooked up to the ground wire on the trailer frame. Wire #1
It is possible you don't have a ground wire but using the actual hitch to the truck frame as a ground.
Just thinking out loud.
Let us know what else you find.
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10-15-2016, 10:43 AM
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#12
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Senior Member
Join Date: Aug 2015
Location: South West Michigan
Posts: 187
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Quote:
Originally Posted by jschmidt
I have 12 volts at the plug on my truck when I checked it with my meter and the battery terminals are tapped so the won't short out if they hit the frame i plugged the trailer into my truck and checked for voltage where the battery cables are mounted underneath the front of the camper and have 0 volts with my meter when hooked up to positive and negative cables. I am waiting on the box to put a battery in to come in
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Did you check for voltage at your battery terminals with the key on or off in the truck. The fuse & relay I mentioned earlier disconnect the battery/terminals in the trailer when the key is turned off. This prevents the trailer from running your trucks battery down when the truck is not running. The relay goes in position #9 & the 30amp fuse goes in position #21 in your fuse box. Check them out.
__________________
2015 Flagstaff 8528IKWS Diamond Package
2013 Ford F-150 Super Crew, EcoBoost, Max Tow,
6.5 bed, Roadmaster Active Suspension, E rated tires
98 days camping 2017 98 days camping 2018
94 days camping 2019 49 days camping 2020
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10-15-2016, 10:57 AM
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#13
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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Quote:
Originally Posted by Wayne Joan
Did you check for voltage at your battery terminals with the key on or off in the truck. The fuse & relay I mentioned earlier disconnect the battery/terminals in the trailer when the key is turned off. This prevents the trailer from running your trucks battery down when the truck is not running. The relay goes in position #9 & the 30amp fuse goes in position #21 in your fuse box. Check them out.
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Good call. Worth checking.
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10-15-2016, 02:26 PM
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#14
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Junior Member
Join Date: Apr 2016
Posts: 12
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How to energize pin #4?
I have a similar issue. I have never had power going from the harness to the trailer, only tail and running lights. I just went out ( 10 minutes ago) and tested pin 4, no voltage. Do I need to go to an electrical shop to get additional wiring to power pin4? This is 2006 Isuzu Ascender TV with factory harness for towing. This would be valuable to allow me to run Dometic fridge while we are driving to keep it cool between home and campground.
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10-15-2016, 05:57 PM
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#15
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Junior Member
Join Date: Sep 2016
Posts: 18
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The measurements I took were with the truck running
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10-15-2016, 06:10 PM
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#16
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Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
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Quote:
Originally Posted by Fuzzy53
I have a similar issue. I have never had power going from the harness to the trailer, only tail and running lights. I just went out ( 10 minutes ago) and tested pin 4, no voltage. Do I need to go to an electrical shop to get additional wiring to power pin4? This is 2006 Isuzu Ascender TV with factory harness for towing. This would be valuable to allow me to run Dometic fridge while we are driving to keep it cool between home and campground.
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I would first check the fuse block (likely under the hood) to see if there is a fuse and make sure it is good.
__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
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10-15-2016, 10:20 PM
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#17
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Senior Member
Join Date: Aug 2015
Location: South West Michigan
Posts: 187
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Quote:
Originally Posted by jschmidt
The measurements I took were with the truck running
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What terminal are checking? Have you checked for the fuse & relay?
__________________
2015 Flagstaff 8528IKWS Diamond Package
2013 Ford F-150 Super Crew, EcoBoost, Max Tow,
6.5 bed, Roadmaster Active Suspension, E rated tires
98 days camping 2017 98 days camping 2018
94 days camping 2019 49 days camping 2020
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10-15-2016, 10:47 PM
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#18
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by Fuzzy53
I have a similar issue. I have never had power going from the harness to the trailer, only tail and running lights. I just went out ( 10 minutes ago) and tested pin 4, no voltage. Do I need to go to an electrical shop to get additional wiring to power pin4? This is 2006 Isuzu Ascender TV with factory harness for towing. This would be valuable to allow me to run Dometic fridge while we are driving to keep it cool between home and campground.
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You will need to read your owners manual. MOST trucks, especially older ones, do not come with the fuses/relays that are required to get power to pin #4 installed. The owner has to install them. Your owners manual should tell you about this and where to install them. (If you no longer have them, a trip to the dealer is probably in your future.)
I did some digging and it appears that your TV is a re-badged GMC Envoy. Looking up the Owner's manual, it doesn't tell you a lot (neither did my 2009 Silverado's). But looking at all the fuses in the pics of the fuse boxes, I'm thinking your aux power fuse is #38 in the under hood fuse box or fuse #46 in the rear underseat fuse block. You'll need a 20 or 30 amp fuse. (I paid about $12 for mine at the Chevy dealer.) Since it's basically a GM, be aware that the aux power wire is not always hooked up, either. Here's a 2008 Silverado example:
https://www.etrailer.com/question-21543.html
You may need to hook this up, too.)
Further, once the fuses/relays are installed, some trucks will supply power to pin #4 all the time and some will only do it if the ignition is turned on. You need to check to see which way your truck operates.
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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10-16-2016, 10:55 AM
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#19
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Senior Member
Join Date: Dec 2014
Posts: 173
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Quote:
Originally Posted by jschmidt
I do not have a battery on it yet. But when I first got the trailer I was pulling it with a 05 Dodge Durango and the jack and everything worked without a battery in it ...
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Towing without a trailer battery means you have no power for the breakaway switch to apply the brakes if the trailer separates from the tow vehicle. That is ILLEGAL and could be catastrophic.
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10-16-2016, 03:54 PM
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#20
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,598
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Quote:
Originally Posted by johntaylor
Towing without a trailer battery means you have no power for the breakaway switch to apply the brakes if the trailer separates from the tow vehicle. That is ILLEGAL and could be catastrophic.
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EXACTLY!
Please post what dealer let you leave the lot without a battery or informing you of this.
__________________
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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