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  1. #11
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    Quote Originally Posted by Brother_Bluto View Post
    Sounds like you have something else going on, as the parasitic drain on mine would drain my dual group 27 batteries in about a month from experience (maybe a tad less). Once you figure it out, as others have said, highly recommend installing a positive shut off (fairly quick and easy install). Anytime I am not using mine, and I am not pulling the batteries... I simply flip it over to off. I put in a Blue Sea On/Off: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
    how do those hook up with dual batteries..?
    2019 Solitude 372WB FBP loaded
    2021 Ford F350 King Ranch 6.7 FX4 Long Bed Rapid Red
    1970 Plymouth Roadrunner
    1968 Dodge Charger

  2. #12
    Site Team WhittleBurner's Avatar
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    Are the fridges residential and on?
    Marcy & Gary
    2014 Grand Design - Reflection 303RLS
    2022 GMC 3500 Denali Duramax Longbed SRW
    2015 GMC Denali 3500 - Retired
    2003 F350 - retired
    Michigan
    We're in trouble now, the dog are bloggin'!
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  3. #13
    Seasoned Camper
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    Quote Originally Posted by JMCFAN View Post
    how do those hook up with dual batteries..?
    Easy - you need a switch and one additional battery cable. With two 12v batteries in parallel, you should have one battery feeding the positive line to the trailer, and the other feeding the negative. Most will say it is safer to install the cut-off on the negative side which is what I did. You simply disconnect the negative line, attach that to the switch. On that same side would go any other smaller lines that are currently on the negative terminal (I think there was one on mine). You then use the new cable to go from switch to the negative terminal on the battery. The switch is now a positive cut-off for the battery to the coach. Of course you do all this with the positive taken off, and the switch mounted where you want it in the belly. My install was about 10min once I had the battery boxes open. No more parasitic drain when parked for a while!
    2022 Momentum 351M-R
    2019 Ford F450 Platinum CC 6.7L Powerstroke FX4; Truck Covers USA American Work Tonneau; B&W 25K hitch; Airlift 5000 Ultimate+ w/WirelessAir; ZRoadZ back-up lamps
    Gone: 2018 Reflection 28BH; 2017 Ford F350 Platinum CCSB 6.7L Powerstroke FX4; 2015 GMC Denali 2500HD CCSB Dmax
    Gone but still in the family: 2004.5 Chev 2500HD CCSB LTZ Dmax

  4. #14
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    Quote Originally Posted by WhittleBurner View Post
    Are the fridges residential and on?
    Yes residentiual... but in "OF" mode....
    2019 Solitude 372WB FBP loaded
    2021 Ford F350 King Ranch 6.7 FX4 Long Bed Rapid Red
    1970 Plymouth Roadrunner
    1968 Dodge Charger

  5. #15
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    Two thoughts. One, the manufacturer’s installation instructions say to wire the positive side to the switch. Two, if you have two batteries, get a switch for two batteries so you can isolate one battery if you need to.

  6. #16
    Seasoned Camper
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    Quote Originally Posted by Silverbeard View Post
    Two thoughts. One, the manufacturer’s installation instructions say to wire the positive side to the switch. Two, if you have two batteries, get a switch for two batteries so you can isolate one battery if you need to.
    If I were wiring it on my boat, no question I would do exactly that as I only use one battery at a time to ensure I have a good second battery and I would typically alternate on days. With regards to an RV, if the 12V batteries in parallel are wired correctly with the positive leg on battery 1, and the negative leg on battery 2... then your batteries should be drawing down at exactly the same level and wouldn't want to isolate or prevent one from charging. As far as positive or negative - lots of varying answers on that issue with respect to an RV. But in the end - to each and their own and whatever works for you or meets your needs.
    2022 Momentum 351M-R
    2019 Ford F450 Platinum CC 6.7L Powerstroke FX4; Truck Covers USA American Work Tonneau; B&W 25K hitch; Airlift 5000 Ultimate+ w/WirelessAir; ZRoadZ back-up lamps
    Gone: 2018 Reflection 28BH; 2017 Ford F350 Platinum CCSB 6.7L Powerstroke FX4; 2015 GMC Denali 2500HD CCSB Dmax
    Gone but still in the family: 2004.5 Chev 2500HD CCSB LTZ Dmax

  7. #17
    Site Sponsor
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    Well both batteries tested bad! Little bit of a hassle but got 2 new ones under warranty
    2019 Solitude 372WB FBP loaded
    2021 Ford F350 King Ranch 6.7 FX4 Long Bed Rapid Red
    1970 Plymouth Roadrunner
    1968 Dodge Charger

  8. #18
    Long Hauler DaveMatthewsBand's Avatar
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    Quote Originally Posted by JMCFAN View Post
    Well both batteries tested bad! Little bit of a hassle but got 2 new ones under warranty
    Well there ya go... Occam’s Razor.



    Sent from my iPhone using Tapatalk
    Resistance is Not Futile, It's Voltage Divided by Current.


  9. #19
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    Quote Originally Posted by DaveMatthewsBand View Post
    Well there ya go... Occam’s Razor.



    Sent from my iPhone using Tapatalk
    LOL.... less then a year old though..... and dang those things are not in the easiest place to replace...
    2019 Solitude 372WB FBP loaded
    2021 Ford F350 King Ranch 6.7 FX4 Long Bed Rapid Red
    1970 Plymouth Roadrunner
    1968 Dodge Charger

  10. #20
    Long Hauler DaveMatthewsBand's Avatar
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    Quote Originally Posted by JMCFAN View Post
    LOL.... less then a year old though..... and dang those things are not in the easiest place to replace...
    Are yours difficult to access?
    Resistance is Not Futile, It's Voltage Divided by Current.


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