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09-23-2018, 01:16 PM
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#1
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Member
Join Date: Apr 2018
Location: Port St Lucie FL
Posts: 50
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Charge wire for the toad
Hi all, I am setting up our Hyundai Veloster as our toad. Got all the Blue OX hardware done and am starting the wiring. There is a pin on the rv side of the 7 pin connector that has 12 v on it when rv is running. Can I run that to the toad battery to keep it charged while towing ? I'm sure I'll need something to offset the drain from parasitic and break controller loads. Thanks !!
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09-23-2018, 01:20 PM
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#2
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Senior Member
Join Date: Aug 2015
Posts: 6,911
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5winds-
This link shows the standard 7-pin connector wiring. The 12V charge line is in the one o'clock position when looking into the coach's connector. Is that where you measured the 12V?
__________________
Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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09-23-2018, 01:30 PM
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#3
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Member
Join Date: Apr 2018
Location: Port St Lucie FL
Posts: 50
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Yup, that's the one...
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09-23-2018, 01:38 PM
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#4
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Oct 2008
Location: Merritt, BC
Posts: 3,753
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Bob, Sherron & Kinsey (RIP 2013-2022)
2017 Tiffin Phaeton 40QBH
2014 Jeep Cherokee Limited
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09-23-2018, 02:20 PM
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#5
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Senior Member
Join Date: May 2015
Posts: 679
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Yes you can use that charge wire to keep toads battery charged. Best to use it thru a toad battery charger as was posted. The RVI Toad Battery Charger as mentioned is what I use---same set up as you plan on running.
6 years now and still working as new.
Grumpy
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Steve & Cheryl + Zoey, and Ziggy, our furry kids.
2012 Forrest River Lexington 283ts
2013 Subaru Crosstrek toad
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09-23-2018, 04:31 PM
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#6
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Senior Member
Join Date: Aug 2015
Posts: 6,911
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5winds-
As a minimum, a charge line should have a fuse close to the battery at each end. 15A is "the usual." Some have used self-resetting circuit breakers. They work well, but have been implicated in one toad fire reported on iRV2.
Sometimes a diode is called-for, but not often. Our coach needs a diode.
A device like the RVI Toad Battery Charger or the LSL Toad Charge is optional. I installed one on our coach. It provides the diode function.
__________________
Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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09-23-2018, 05:21 PM
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#7
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Community Moderator
Join Date: Sep 2011
Location: Between the Oceans
Posts: 8,026
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Just as "live free or die" (Mark) said, I have been using a charge line within a 7 pin cable, no single issue in 6 years. 15A fuse on each end to protect the wire, and a diode right before the connector to the toad battery. All is good.
__________________
Steven & Polly
2000 Country Coach Intrigue 40' ISC 350
2018 Ford Explorer 4WD
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09-23-2018, 05:24 PM
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#8
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Senior Member
Join Date: Jun 2011
Location: FL
Posts: 11,403
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Since the charge voltage is present you do not need to isolate the toad battery. I changed my charge line to be hot all the time. My rv is a monster with plenty of batteries and systems so I do not worry about running the RV down under any conditions.\
My toad is a power hungry pig and without a good charge line the battery is dead in a day. Yes the battery is just fine folks. It is a Ford Edge Limited with keyless ignition. It just likes to keep things alive when towing.
I highly recommend a fuse or a breaker near the toad battery of course.
The breaker on my toad charge line could have saved my vehicle today as we discuss this. My heavy duty charge plug actually decided to break off the pin of the charge line connector at the toad. It did not short to any metal or at least there is no evidence of it. Had it done so the breaker would have protected me.
The toad battery was dead so the break happened early in the day. A good reason for an even closer inspection when we stop for breaks. I do a walk around but somehow missed it.
All is good but my tools, voltmeter, and small torch saved the day.
Cheers, have fun.
__________________
Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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09-24-2018, 04:33 AM
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#9
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Senior Member
Newmar Owners Club
Join Date: Jul 2011
Posts: 3,458
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Quote:
Originally Posted by l1v3fr33ord1
5winds-
As a minimum, a charge line should have a fuse close to the battery at each end. 15A is "the usual." Some have used self-resetting circuit breakers. They work well, but have been implicated in one toad fire reported on iRV2.
Sometimes a diode is called-for, but not often. Our coach needs a diode.
A device like the RVI Toad Battery Charger or the LSL Toad Charge is optional. I installed one on our coach. It provides the diode function.
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Mark, what determines whether a coach needs a diode or not?
__________________
2021 DSDP 4326 Freightliner
2023 Winnebago ERA 70A
2005 KSDP 3910 Spartan
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09-24-2018, 04:35 AM
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#10
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Senior Member
Newmar Owners Club
Join Date: Jul 2011
Posts: 3,458
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Quote:
Originally Posted by CountryFit
Just as "live free or die" (Mark) said...
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Thanks for translating that! I have been looking at that screen name for quite a while trying to figure it out.
__________________
2021 DSDP 4326 Freightliner
2023 Winnebago ERA 70A
2005 KSDP 3910 Spartan
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09-24-2018, 07:03 AM
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#11
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Senior Member
Join Date: Aug 2015
Posts: 6,911
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Quote:
Originally Posted by USMCRET
Mark, what determines whether a coach needs a diode or not?
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It depends on whether or not you want to leave the umbilical connected when the coach is shut off. If you disconnect, no need for a diode.
If you keep the coach and toad connected (we do), then it depends on the circuit. If it is ignition-switched, and the charge line is the only wire on the circuit, a diode is not needed. If it's not ignition-switched, then someone may want a diode in the circuit, to keep the coach from pulling starting current from the toad battery.
Or. it's coach-specific. Certain years of Monaco coaches (including ours) provide the charge line 12V from a bus off an ignition-switched relay. Applying 12V to the toad end of the charge line will supply 12V to any of the other circuits attached to the same bus. For those who may connect their coach-toad umbilicals before starting the coach, or leave their umbilicals connected overnight, this could be a problem. A diode at the toad end fixes this problem.
See this post for a diagram of the problem.
__________________
Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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09-24-2018, 08:33 PM
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#12
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Senior Member
Freightliner Owners Club
Join Date: Dec 2011
Posts: 240
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Quote:
Originally Posted by l1v3fr33ord1
5winds-
As a minimum, a charge line should have a fuse close to the battery at each end. 15A is "the usual." Some have used self-resetting circuit breakers. They work well, but have been implicated in one toad fire reported on iRV2.
Sometimes a diode is called-for, but not often. Our coach needs a diode.
A device like the RVI Toad Battery Charger or the LSL Toad Charge is optional. I installed one on our coach. It provides the diode function.
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That LSL toad charge connections are a piece of junk. Half the time I would have a dead battery. Good product but crappie connectors.
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09-25-2018, 05:32 AM
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#13
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Senior Member
Join Date: Nov 2013
Posts: 5,770
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I used the RVI Brake charge controller. It comes with everything you need plus there is an indicator light so you know the connection is good.
__________________
2015 Tiffin Phaeton 40QBH
2018 Chevrolet Colorado Toad
Roadmaster Tow Setup
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09-25-2018, 08:34 AM
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#14
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Senior Member
Monaco Owners Club
Join Date: Sep 2003
Location: Quitman MS
Posts: 2,967
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Quote:
Originally Posted by BobGed
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And very reasonable priced but this one is eaven cheaper.
https://www.rvupgradestore.com/Brake...-p/19-3252.htm
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Walt & Will
2000 Dynasty
2017 Ram Big Horn Crew C 4X4 w/ M&G
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