Reply
 
Thread Tools Display Modes
Old 09-30-2014, 12:05 PM   #11
Senior Member
 
Join Date: Mar 2013
Posts: 120
stopped by my local dealer (small town). He said, yes need relay plug and if i come by friday , he'll stick one in at no charge. sweet!
__________________

__________________
boatnut is offline   Reply With Quote
Old 09-30-2014, 12:07 PM   #12
Senior Member
 
mud yapster's Avatar
 
Join Date: Aug 2014
Location: Texas
Posts: 1,162
good deal boatnut
__________________

__________________
2014 Palomino Columbus 3650TH
435AH 12V VMax Charge Tanks, 520 watt Monocrystilline Solar Array, Morningstar MPPT TS-60 CC,Morningstar Remote,Cotek True Sine Wave Inverter,Cotek Remote Controller,50amp Progressive Hardwire Surge Protector
2015 Dodge 3500 6.7L 4X4
2011 CanAm Commander XT 1000
mud yapster is offline   Reply With Quote
Old 09-30-2014, 01:31 PM   #13
Member
 
Join Date: Nov 2013
Location: Cold Spring, KY
Posts: 66
I have a 2012 Yukon and had the same problem. I found the 12 volt wire not connected in the fuse box. Fuse was there but no wire. The wire was bundled up and taped to the fire wall. Had to buy a metric nut and hooked it up. All went well. Then found out from GMC that if I want to charge the battery on the trailer I needed to push the tow haul button and that would send a boost to the battery. I tried it and it works well.
__________________
Tom & Terri
2012 GMC Yukon
2013 Roockwood Mini Lite
Tomgky is offline   Reply With Quote
Old 09-30-2014, 01:42 PM   #14
Member
 
kc5mhb's Avatar
 
Join Date: Sep 2014
Posts: 70
Quote:
Originally Posted by AquaMan View Post
You have to think, there will be a voltage drop from the alternator to the trailer, especially going through several plugs along the way.
Resistance, wire size and number of strands in that wire make a difference too.
__________________
2015 Cherokee Limited 274DBH
2000 F250 CC SD V10 4X4 8' bed, 4:30 gears, SCT X3
2007 Mustang Convertible V6 - Lots of GT mods
1965 Mustang Coupe I6, 3 spd. manual
1963 Thunderbird Landau 390
kc5mhb is offline   Reply With Quote
Old 09-30-2014, 01:45 PM   #15
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Quote:
Originally Posted by Tomgky View Post
I have a 2012 Then found out from GMC that if I want to charge the battery on the trailer I needed to push the tow haul button and that would send a boost to the battery. I tried it and it works well.
Did he sell ice to Eskimos to? Lol

That's totally false.

Tow haul mode just raises the rpm between up shifts via the transmission.


Turbs
__________________
TURBS is offline   Reply With Quote
Old 09-30-2014, 02:22 PM   #16
Phat Phrog Stunt Team
 
AquaMan's Avatar
 
Join Date: Apr 2012
Location: Tipp City, OH
Posts: 6,477
Quote:
Originally Posted by f1100turbo View Post
Did he sell ice to Eskimos to? Lol

That's totally false.

Tow haul mode just raises the rpm between up shifts via the transmission.


Turbs
Actually there may be something to that. What I think it does is raise the output at the alternator(s) if it detects a low voltage situation in the trailer battery. It goes into a high voltage boost mode, where normally it drops down if all batteries are fully charged.
__________________
2016 Georgetown 364TS
Nights Camped 2017 - 49
AquaMan is offline   Reply With Quote
Old 09-30-2014, 02:53 PM   #17
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Quote:
Originally Posted by AquaMan View Post
Actually there may be something to that. What I think it does is raise the output at the alternator(s) if it detects a low voltage situation in the trailer battery. It goes into a high voltage boost mode, where normally it drops down if all batteries are fully charged.
I'm thinking that's possible regardless of tow haul mode or not?

Turbs
__________________
TURBS is offline   Reply With Quote
Old 09-30-2014, 03:04 PM   #18
Member
 
kc5mhb's Avatar
 
Join Date: Sep 2014
Posts: 70
Ok I realize that I'm new in the forum but I felt this information might be helpful for everyone facing this issue.
Tow vehicles alternators have changed over the years many of the newer vehicles utilize a computer controlled alternator. The computer tells the alternator when to charge and when to run off of the battery. I know my dad's 2005 Chevy Silverado and my 2007 Mustang both use this technology so I can at least say it goes back to 2005 for Chevy. (At this point I must make a disclaimer that it may not be true for all vehicles. A quick call to your local dealer's service manager and they should be able to tell you if you have this feature or not. I found out the hard way.) This poses a interesting scenario to charging the camper battery while driving if the alternator is turning on and off at regular intervals. The second thing to consider what size wire is running from the front distribution panel to the 7 pin plug in the rear of the vehicle. I believe on my F250 its a 10 gauge. A 10 gauge wire running roughly 25 feet ( I have the long bed CC) is only going to be rated somewhere around 14 to 16 amps at that length depending upon the number of strands in that wire. Current flows on the skin of each strand and that is why welding wire and golf cart wires have so many of them; for maximum current flow. So the bottom line is as someone else stated, you won't be charging a dead battery back to a fully charged state at that current rating. Best case is that you will be trickle charging or keeping the fridge running. To find out how much current the circuit itself can handle, check the owners manual of the tow vehicle and see what the towing charge circuit is rated for.
__________________
2015 Cherokee Limited 274DBH
2000 F250 CC SD V10 4X4 8' bed, 4:30 gears, SCT X3
2007 Mustang Convertible V6 - Lots of GT mods
1965 Mustang Coupe I6, 3 spd. manual
1963 Thunderbird Landau 390
kc5mhb is offline   Reply With Quote
Old 09-30-2014, 03:19 PM   #19
Member
 
Join Date: Nov 2013
Location: Cold Spring, KY
Posts: 66
Click image for larger version

Name:	ImageUploadedByForest River Forums1412104638.176012.jpg
Views:	126
Size:	675.3 KB
ID:	63850
This is a photo from my Yukon owners manual. It says it sends 40 percent more power to the trailer battery


Sent from my iPhone using Forest River Forums
__________________
Tom & Terri
2012 GMC Yukon
2013 Roockwood Mini Lite
Tomgky is offline   Reply With Quote
Old 09-30-2014, 03:22 PM   #20
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Quote:
Originally Posted by Tomgky View Post
Attachment 63850
This is a photo from my Yukon owners manual. It says it sends 40 percent more power to the trailer battery


Sent from my iPhone using Forest River Forums
Now isn't that something!
I was wrong this month

I'm going to check the duramax manual I don't ever remember reading about this.

I take back what I thought was wrong!

Learn something new every day!

Thanks for sharing.

Turbs
__________________

__________________
TURBS is offline   Reply With Quote
Reply

Tags
battery, camper, charging

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 Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:26 AM.