Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 03-15-2014, 04:30 PM   #1
Junior Member
 
Join Date: Mar 2014
Location: Pewaukee
Posts: 3
No 12 volts from Tow Vehicle ??

2006 JayFlight 30.5 RLS

Battery went dead on trailer, so I thought the 12 volts from my TV would be able to power the 12 volt accessories, but it didn't.
If I put a voltmeter on my 7 pin plug on the TV I got 12 volts.
I was able to verify that I have 12 volts on the trailer cord where it goes in the trailer by the 5th wheel hitch.
I put a voltmeter on the power center, no 12V.
I took the battery out of the trailer and I have no 12V power inside the cabin.

I put a new charged battery in the trailer, checked voltage, got 12.8. When I hooked the TV up to the trailer via the 7 Pin connector, I expected the voltage to rise, it didn't.

It's almost like there is a break in the wire between the hitch and the power inverter which is located in the back of the trailer.

Could a bad ground between the trailer and TV be possible?

Any thoughts or information would be appreciated.
__________________

jp279 is offline   Reply With Quote
Old 03-15-2014, 04:36 PM   #2
Senior Member
 
Threebutchers's Avatar
 
Join Date: Mar 2013
Location: Planet Earth
Posts: 6,818
Did you check for a blown 30A "Reverse Polarity" fuse in the converter? There may also be a blown fuse off the positive battery terminal between the battery and the exterior front main junction box.
__________________

Threebutchers is offline   Reply With Quote
Old 03-15-2014, 05:13 PM   #3
Junior Member
 
Join Date: Mar 2014
Location: Pewaukee
Posts: 3
Yes, I checked those fuses, they are both good
jp279 is offline   Reply With Quote
Old 03-15-2014, 05:22 PM   #4
Senior Member
 
Threebutchers's Avatar
 
Join Date: Mar 2013
Location: Planet Earth
Posts: 6,818
Sorry that didn't help....(next man up)
Threebutchers is offline   Reply With Quote
Old 03-15-2014, 05:27 PM   #5
Senior Member
 
Join Date: Jan 2014
Location: Aurora CO
Posts: 2,336
How about reference to ground in the trailer. ( main ground lug to trailer frame , and ground wire back to power center )
__________________
Jim & Kim from Colorado

2014 Eagle 30.5 RLS
2015 Dodge 3500HD SRW 6.7L
Click on my profile for Mods and notes
Jmooney is offline   Reply With Quote
Old 03-15-2014, 05:27 PM   #6
Senior Member
 
Join Date: Jan 2014
Location: Aurora CO
Posts: 2,336
Let's us know what you find
__________________
Jim & Kim from Colorado

2014 Eagle 30.5 RLS
2015 Dodge 3500HD SRW 6.7L
Click on my profile for Mods and notes
Jmooney is offline   Reply With Quote
Old 03-15-2014, 07:23 PM   #7
Senior Member
 
troutslayer's Avatar
 
Join Date: Dec 2012
Location: NW AR (God's Country)
Posts: 1,848
You may have a bad converter. A 2006 model may be due for a new one.
__________________
Skip

2012 Eagle Super Lite HT 26.5RKS
2005 GMC 2500 SLT HD D/A
troutslayer is offline   Reply With Quote
Old 03-15-2014, 09:44 PM   #8
Senior Member
 
tnchuck100's Avatar
 
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
Pin 4 is 12V. Pin 7 is for backup lights.

http://www.etrailer.com/faq-wiring.aspx
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD

EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
tnchuck100 is offline   Reply With Quote
Old 03-23-2014, 03:53 PM   #9
Senior Member
 
Mustang65's Avatar
 
Join Date: Nov 2012
Location: Clearwater, FL area
Posts: 3,671
- Check the 12VDC lead on the TT's charge controller that comes from the battery, this connection may be lose or not even connected. Same with the controllers ground lead.
- If you know a little about electricity, follow the fused lead from the battery into the electrical box where it goes into the TT. Open the box and make sure that the wire from the battery is connected to a wire that goes into the TT. If there is a wire nut on the lead check for a good connection and also check the voltage there.
If all else fails,
- Try this, disconnect the battery from the TT (pull the 30 amp fuse by the battery box), disconnect your shore power cable, and your TV cable. Now there should be no voltage in the TT. With a digital voltage test meter, put it on Ohms (resistance) and put the red meter lead into the fuse clip on the TT side, not the battery side. Ground the black meter lead to the frame. Do you get any resistance reading? Next turn on your TT's interior lights, the resistance reading should be different.
If not, your 12 volt battery feed is open somewhere between the battery fuse and the charge controller, or the lead fell off the charge controller.

Good Luck
Don
__________________
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package

Our Solar Album https://www.jaycoowners.com/album.php?albumid=329
Mustang65 is offline   Reply With Quote
Old 03-24-2014, 05:14 PM   #10
Junior Member
 
Join Date: Mar 2014
Location: Pewaukee
Posts: 3
It's been a little cold outside

Quote:
Originally Posted by Jmooney View Post
How about reference to ground in the trailer. ( main ground lug to trailer frame , and ground wire back to power center )
The 7 pin cord that connects the trailer to TV has a ground wire that grounds to the 5th wheel hitch on trailer, that appears good.
I thought the ground wire from the converter to the frame might be bad, unfortunately the trailer has a sealed underbelly. I was able to open an access panel that was about two feet from the ground lug, it appears to be secure, (OK).

So to recap, with trailer battery connected, I have 12volts inside the cabin.

With battery disconnected, and 7 pin plug connected to tow vehicle, no 12 volts inside the cabin.

it appears the ground is good at the hitch end and at converter. I'll have to check the resistance on the +12v wire on the 7pin trailer plug to the converter.
__________________

jp279 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 07:27 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.