charging trailer with tug - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-01-2009, 12:41 PM   #1
Member
 
Trailer: 73 Boler (modified)
Posts: 48
hello all. going to kejimikujik national park this weekend, and i've got a new (to me) tug this go around. I've finished setting up my trailer lights and connection, but now i'm going to set up the 12v so that i can charge the trailer with the tug. the boler is already wired for that in the 7 pin round connector, I just never got around to doing it on my previous tow vehicle.

so, are people connecting their +12volt right straight to the battery (with fuse of course)? I had the idea to use a 2nd battery switch, or an isolator like this:



Name:   dual_battery_switch.jpg
Views: 56
Size:  20.0 KB


which is basically a heavy duty relay: when the key is in the run position, it' will turn the relay on, and connect the batteries to charge the accessory, or trailer. when the key is off, the current is disrupted so the tug battery cannot be drained by the accessory. I asked my father who's towed all his life - he has a stick built truck camper, with much the same amenities, but his charging wire goes directly to the tug battery.

i'm confused because nobody talks about this, but do people ever worry about not being able to start their tug in the morning? I know in my old van i had a dual batteries under the hood, and one was isolated in this fashion. is it overkill, or a good idea?
__________________

__________________
Nate is offline   Reply With Quote
Old 06-01-2009, 02:38 PM   #2
Member
 
Trailer: 73 Boler (modified)
Posts: 48
anybody? i suppose I'm going to go ahead and use the relay, as I have now got the wire from the battery to the rear bumper loomed, taped and cable-tied.
__________________

__________________
Nate is offline   Reply With Quote
Old 06-01-2009, 03:01 PM   #3
Senior Member
 
The Hobo's Avatar
 
Name: Ulysse
Trailer: 1976 Triple E Surfside
Posts: 172
I have mine charging while driving only.
No relays ect ect.

Works perfect.
__________________
1976 Surfside Tripple-E
The Hobo is offline   Reply With Quote
Old 06-01-2009, 03:57 PM   #4
Member
 
Trailer: 73 Boler (modified)
Posts: 48
so what does that mean? does it mean you have a wire running straight from + on your tug battery straight to + on your trailer Battery? do you just disco the umbilical cord when you park?
__________________
Nate is offline   Reply With Quote
Old 06-01-2009, 04:23 PM   #5
Senior Member
 
Greg A's Avatar
 
Name: Greg
Trailer: 2015 Escape 19
Arizona
Posts: 1,828
We have a direct charging line running from the battery on the tug with fuse between to the 7 pin connector and then straight to the trailer battery when connected. Yes, the 7-pin connector is disconnected when we arrive, and some folks put a battery disconnect switch so they can disconnect that way and leave the connector hooked up.
__________________
Owner:
Fiberglass-RV-4Sale.com
Scamp Owners International
2015 Escape 19 & 1997 Scamp 19
Greg A is offline   Reply With Quote
Old 06-01-2009, 05:54 PM   #6
Senior Member
 
pjanits's Avatar
 
Name: Pete
Trailer: 17 ft 1986 Burro
Tennessee
Posts: 881
The relay will do the same thing, disconnect the battery on the trailer when then ignition is off. I have one but never wired it in because we just unplug the tow when we get there.
But if I forget I always have that handy jump-it.
__________________
pjanits is offline   Reply With Quote
Old 06-01-2009, 06:04 PM   #7
Moderator
 
Frederick L. Simson's Avatar
 
Name: Frederick
Trailer: Fiber Stream
California
Posts: 8,151
Registry
Send a message via AIM to Frederick L. Simson
Talking

I paid to have my charge line installed at Camping World. They installed blocking diodes near the Honda's battery which allow current to flow to the trailer's battery when the car is running but not when it is shut off. They used different hardware, but it does the same thing your setup does.
__________________
Frederick - The Scaleman
1978 Fiber Stream 16 named "Eggstasy" & 1971 Compact Jr. named "Boomerang"
Frederick L. Simson is offline   Reply With Quote
Old 06-01-2009, 06:21 PM   #8
Senior Member
 
Larry C Hanson's Avatar
 
Name: Larry H
Trailer: Trillium
Arizona
Posts: 303
Hello, Here is the setup I use with great success. I used it with my
last 13' Trillium keeping the battery charged up and allowing the
refrigerator to run on 12 VDC while traveling. With the isolator
there is no need to worry about disconnecting the trailer hookup
saving a fancy switch and some effort. When I stop for over an
hour I switch the refrig to propane.

Parts:
Sure Power Industries Multi Battery Isolator Model 9523A (95 Amp Max)
-- Note: The Model 9523A has an extra terminal "E" to use with GM vehicles.
-- A Model 952 would have sufficed for this application.
50AMP DC circuit breaker
# 6 wire - 30 feet (#6 instead of #8 for long run to rear of truck)
MISC: terminal lugs, heat shrink tubing, solder, etc.

The output of the alternator (RED) was disconnected and a New (RED) wire
run to the isolator input terminal A.

Isolator # 1 connection to (BLACK) wire that was hooked to the wire originally on
Alternator output going to vehicle battery.

Isolator #2 output goes to a 50 AMP circuit breaker and then #6 wire (WHITE) back to
battery connection on the trailer receptical.

Also, a #6 Wire was run from the alternator case to the frame rail in the
engine compartment and off the frame rail to Ground on Trailer connector.
This helps ensure a low resistance path for the ground, too.

Hope this helps some fellow FRG owners. If anyone has any suggestions
to help improve this setup, please post as I am looking for a new tug and
want a similar setup on it. Larry H


Click image for larger version

Name:	Isolator.jpg
Views:	89
Size:	198.7 KB
ID:	20706
__________________
Larry C Hanson is offline   Reply With Quote
Old 06-01-2009, 06:29 PM   #9
Member
 
Trailer: 73 Boler (modified)
Posts: 48
ahhhhhh - it didn't occur to me that people unplug the umbilical cord. I always leave it connected which is why i couldn't wrap my head around a direct connection.

thanks to all that responded - I grew up with truck campers, it's a hassle to disconnect the umbilical cord so by force of habit i always leave it connected on my boler.

For what it's worth, i did end up using the dual battery switch, and I also ran a ground line from the neg on the tug to the back, grounding it to the frame, hitch, and right in to the 7-pin. boler taillights are brighter now...guess after 18 years, my toyota's grounds have fizzled a little!

Once I get the interior cleaned up a little, I'll throw some pics of my Boler up finally!
__________________
Nate is offline   Reply With Quote
Old 06-01-2009, 07:34 PM   #10
Senior Member
 
Trailer: 2013 Escape 19
Posts: 362
We use a Blue Sea automatic charge relay (ACR) as pictured. It senses the tow vehicle voltage and only switches on when the engine is running, triggered by the higher voltage present with alternator output. It may be overkill, but it has worked great for two years on two different vehicles. It just goes in series with the power lead to the house charging line and uses one short sensing lead to get the TV's charge system voltage. It's even adjustable, but I've never felt the need to change it. http://bluesea.com/category/2/productline/overview/386



Name:   7600_182x182.jpg
Views: 53
Size:  3.6 KB


Parker
__________________
Parker Buckley is offline   Reply With Quote
Old 06-01-2009, 07:49 PM   #11
Senior Member
 
Marv Watson's Avatar
 
Name: marvonw
Trailer: 1978 Trillium 13 ft
Great Lakes area-US
Posts: 160
Quote:
# 6 wire - 30 feet (#6 instead of #8 for long run to rear of truck)
By "#6" do you mean 6 ga. wire? This may be the most important aspect of running from tug battery to camper. I paid a trailer hitch place to hook me up that way and they used 14 ga. wire, which later on I found out is not adequate to push the current all the way to the back end of my 13' Trillium where the battery is. So, now I'm faced with doing it right. Please confirm proper wire gauge or size. Thanks.

Marv. W.
__________________
marvonw
Marv Watson is offline   Reply With Quote
Old 06-01-2009, 09:26 PM   #12
Senior Member
 
Larry C Hanson's Avatar
 
Name: Larry H
Trailer: Trillium
Arizona
Posts: 303
Quote:
By "#6" do you mean 6 ga. wire?Please confirm proper wire gauge or size. Thanks.

Marv. W.
Evening Marv... by #6 I meant 6 Guage. Larry H
__________________
Larry C Hanson is offline   Reply With Quote
Old 06-02-2009, 04:48 AM   #13
Senior Member
 
The Hobo's Avatar
 
Name: Ulysse
Trailer: 1976 Triple E Surfside
Posts: 172
Quote:
We have a direct charging line running from the battery on the tug with fuse between to the 7 pin connector and then straight to the trailer battery when connected. Yes, the 7-pin connector is disconnected when we arrive, and [b]some folks put a battery disconnect switch so they can disconnect that way and leave the connector hooked up.

That's exactly what I have(right on the batterie box cover).
__________________
1976 Surfside Tripple-E
The Hobo is offline   Reply With Quote
Old 06-02-2009, 10:59 AM   #14
Member
 
Trailer: 73 Boler (modified)
Posts: 48
Quote:
By "#6" do you mean 6 ga. wire? This may be the most important aspect of running from tug battery to camper. I paid a trailer hitch place to hook me up that way and they used 14 ga. wire, which later on I found out is not adequate to push the current all the way to the back end of my 13' Trillium where the battery is. So, now I'm faced with doing it right. Please confirm proper wire gauge or size. Thanks.

Marv. W.
I used 8 gauge wire, as that was what was on the trailer from the batty to the tongue, so I met it with the same from the tug. 14 is awfully small for the task, i would'nt go any smaller than 8.
__________________

__________________
Nate is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Battery charging paulitzlee2 Problem Solving | Owners Helping Owners 1 09-15-2009 11:12 PM
Charging with tug curtis c Problem Solving | Owners Helping Owners 13 07-15-2009 12:04 PM
Charging Battery from TV Tim Ryce Problem Solving | Owners Helping Owners 17 09-25-2008 08:58 PM
Battery Charging Chester Taje Problem Solving | Owners Helping Owners 4 08-01-2007 06:56 PM
Battery Charging JOE DRISSEL Electrical | Charging, Systems, Solar and Generators 23 01-08-2006 04:03 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.