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  1. #1
    Seasoned Camper Flat top's Avatar
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    Battery disconnect

    Well it seems that the 12 volt battery disconnect switch down in the basement of our 303 doesn't disconnect anything. Every time we put it back in storage we turn the switch off. Went to pick it up the camper the other day and battery was dead. Charged it back to up and turned the switch to off and everything still operates, from lights to slideouts. I do not believe that this is correct. Anyone else having this problem?
    Steve and Connie Mitchell
    Lodi, California
    2020 Solitude S Class 2930RL
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    Site Sponsor Cate&Rob's Avatar
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    Hi Steve,
    I just went out to our 303 to check . . . expecting to give you a different answer . . . and ours is EXACTLY the same as yours ! The battery switch does not seem to turn anything off. I "think" it used to, so maybe the switches are faulty ? I installed a second battery and a 1/2/both/off switch that I use to disconnect so can't say that I have tried the OEM switch in a long time. Anybody else able to check theirs ?

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  3. #3
    Site Sponsor JCR GD's Avatar
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    I wonder if the switch contact is fusing together like relay contacts sometimes do.
    Jim (& Sharon)
    2015 GD Momentum 385TH - SOLD
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    Site Sponsor Cate&Rob's Avatar
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    In the absence of wiring diagrams . . . let's start guessing .
    The large gauge wire to the left in the picture comes from the battery.
    I "think" the other larger gauge wires go to and from the battery switch (I will confirm this later today)
    Thus, the left breaker is a master "whole coach" protection ?
    The right breaker is for ???

    Rob
    Attached Thumbnails Attached Thumbnails IMG_0425.jpg  
    Cate & Rob
    2015 Reflection 303RLS

  5. #5
    Seasoned Camper
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    I have the same breakers in mine. The other breaker is for the jacks so they stay hot even when the disconnect is turned to off.
    Jerry & Jeanine
    2016 Ram 3500 MegaCab Diesel
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  6. #6
    Site Sponsor Cate&Rob's Avatar
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    Curiouser and Curiouser

    The 6 gauge red and black wires appear to go to and from the disconnect switch.
    But . . . with one wire removed from the disconnect switch, everything in the coach seems to still be functional! (See picture)
    Thus, the blue/white (lower left terminal on the two breakers in the previous picture) must be feeding the main panel.
    Or the 6 ga red wire goes somewhere else before it goes to the disconnect switch ??

    Still curious as to what the right breaker controls. Something (that I didn't try) must be disconnected ??

    In any case . . . confirmed that the disconnect switch does nothing.
    BTW, the nuts on the disconnect switch were only finger tight.

    Rob
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    Cate & Rob
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  7. #7
    Long Hauler offtohavasu's Avatar
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    Rob,

    Something definitely doesn't seem right there. If 12V panel is getting power from the blue/white wire, it seems a little light (hard to tell size from photo).
    Curtis, Christine, Cole, and Charlotte

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    Site Sponsor Cate&Rob's Avatar
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    Quote Originally Posted by offtohavasu View Post
    Rob,

    Something definitely doesn't seem right there. If 12V panel is getting power from the blue/white wire, it seems a little light (hard to tell size from photo).
    Agreed. The blue/white wire looks to be only 14 or maybe 12 ga.
    But, I don't recall anything like a 6 ga coming up to the main fuse panel.
    I am going to poke around behind the main panel to see if I can figure out what feeds it.

    I know that the 6 ga on the left in the first picture is the only connection to the battery.
    Protected by that left breaker are 3 circuits.
    One to the landing gear (with the fuse)
    One 6 ga red to the main disconnect switch (I think).
    On smaller ga blue/white going somewhere.

    Rob
    Cate & Rob
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  9. #9
    Seasoned Camper
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    You got me curious so I went and tested mine. It looks just like yours. Mine does kill the power when the disconnect switch is set to off.
    Jerry & Jeanine
    2016 Ram 3500 MegaCab Diesel
    2014 Reflection 293RES (sold)
    2020 Reflection 303RLS

  10. #10
    Site Sponsor Cate&Rob's Avatar
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    Figured it out . . . had the shore power still connected so converter was powering everything with main battery switch off. Duh .
    Should have that second coffee before charging into these investigations .
    With shore power disconnected, the main battery disconnect works as it should.

    BTW, if one wanted to keep the landing gear off when the main battery switch is off, it would only take moving the fused red wire from the left breaker to the right breaker.

    The main 12V fuse panel is fed by two 6 ga white wires. One from the converter and one from the battery (somehow). Where the white wire from the battery connects in, is still a mystery.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

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