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07-21-2019, 10:38 PM
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#1
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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I Did Some Testing...
... Of the two battery disconnect switches that I added to my batteries.
They actually work just like they're supposed to!
If I just set the switch to "Off" (We all know that doesn't do much...): at the end of the week, I'll be dropped from about 13.1 volts... to 11.9!
With both switches thrown: I'll still be at least at 12.7 volts!
Note: this pic only has one switch. I added a second one to the ground line coming in to the battery on the right...
http://www.thorforums.com/forums/att...1&d=1563748689
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-21-2019, 10:47 PM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: Axis 27.7
State: Pennsylvania
Posts: 165
THOR #12085
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Thanks. I bought a cutoff switch like you show in your picture. It will be installed during winterization later this year.
__________________
Thor Axis 27.7 towing a hot little Chevy Sonic
SE PA
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07-27-2019, 06:34 PM
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#3
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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UPDATE: Still at 12.6 volts this morning.
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-27-2019, 08:00 PM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: SOB 2014 Meridian 36M
State: Washington
Posts: 981
THOR #7205
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Good deal! Nice to know that the battery(ies) aren't going dead between uses.
__________________
Pat & Becky & now Katie
Wenatchee, WA
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07-27-2019, 08:17 PM
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#5
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Site Team
Brand: Thor Motor Coach
Model: Axis 24.1 Windjammer
State: Illinois
Posts: 1,179
THOR #7074
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Well the difference is Bob's unit is not a Thor. On my 2017 axis 24.1 I can take the ground cable completely off BOTH HOUSE batteries throw them in the garbage and everything in my rig is still working will drain the batteries the next day I do have brand new batteries either my BIMM miswired BY Thor something else I cannot figure out. I guess my question I would like to know if any other Axis orVegas owners can take the ground cables off of their house batteries and still have everything running. I now whenever I park disconnect the house and the chassis battery positive. I hope someone can give me a clue of what's going on thank you. I also seem to believe my emergency start on the dash has never ever worked.
__________________
Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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07-27-2019, 08:48 PM
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#6
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
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Quote:
Originally Posted by revjeffrey
Well the difference is Bob's unit is not a Thor. On my 2017 axis 24.1 I can take the ground cable completely off BOTH HOUSE batteries throw them in the garbage and everything in my rig is still working will drain the batteries the next day I do have brand new batteries either my BIMM miswired BY Thor something else I cannot figure out. I guess my question I would like to know if any other Axis orVegas owners can take the ground cables off of their house batteries and still have everything running. I now whenever I park disconnect the house and the chassis battery positive. I hope someone can give me a clue of what's going on thank you. I also seem to believe my emergency start on the dash has never ever worked.
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Gotta see this to believe it. If there is no connection to the negative side of the battery, the battery can neither be charged nor discharge: there is no path for current flow through the battery. If this is indeed the case and the battery goes dead then you have a bad battery.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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07-27-2019, 09:04 PM
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#7
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Site Team
Brand: Thor Motor Coach
Model: Axis 24.1 Windjammer
State: Illinois
Posts: 1,179
THOR #7074
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I wish I lived closer, I would drive it by. Both negative off House everything in house still energized. Lights etc.
__________________
Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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07-27-2019, 09:09 PM
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#8
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
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Quote:
Originally Posted by revjeffrey
I wish I lived closer, I would drive it by. Both negative off House everything in house still energized. Lights etc.
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Without being plugged in? If NOT plugged in pull the negative off the chassis battery as well and see what happens.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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07-28-2019, 12:40 AM
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#9
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Site Team
Brand: Thor Motor Coach
Model: Axis 24.1 Windjammer
State: Illinois
Posts: 1,179
THOR #7074
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I will head to the storage unit in the morning and a try that out. And let you know the results.
__________________
Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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07-28-2019, 01:41 AM
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#10
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Senior Member
Brand: Still Looking
State: Texas
Posts: 6,187
THOR #2121
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Do you have solar?
Depending on how it’s wired, 12V can also come from converter, solar, alternator, or chassis battery.
__________________
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07-28-2019, 01:57 AM
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#11
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Site Team
Brand: Thor Motor Coach
Model: Axis 24.1 Windjammer
State: Illinois
Posts: 1,179
THOR #7074
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No, I do not have solar in fact my unit is stock no additions. I was hoping to see if other Axis or Vegas owners disconnected there negatives also and got the same results. I am suspecting my BIMM (pictured) has been miss wired from the Thor factory from day one.
__________________
Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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07-28-2019, 02:38 AM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 2018 24.1
State: Florida
Posts: 179
THOR #12484
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Quote:
Originally Posted by revjeffrey
No, I do not have solar in fact my unit is stock no additions. I was hoping to see if other Axis or Vegas owners disconnected there negatives also and got the same results. I am suspecting my BIMM (pictured) has been miss wired from the Thor factory from day one.
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That’s crazy Rev. I’ve got some battery maintenance to do tomorrow and will pull the ground cables on my 2018 24.1 and pass it on.
__________________
2018 Vegas 24.1
2006 Gulf Stream G24 Sprinter Van
2004 Newmar Scottsdale 3456
2002 National See Breeze 1341
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07-28-2019, 02:42 AM
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#13
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Site Team
Brand: Thor Motor Coach
Model: Axis 24.1 Windjammer
State: Illinois
Posts: 1,179
THOR #7074
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I would appreciate that. Could give me a start for a final repair solution.
__________________
Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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07-28-2019, 05:17 PM
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#14
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 2018 24.1
State: Florida
Posts: 179
THOR #12484
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RevJeffery,
Pulled cables off both negatives and lost all power. Hope this helps some how.
Built 18 months ago and luckily house batteries still going strong. Minimal boon docking but did stress test it for 24 hours with fan, lights etc. Been unlucky in other ways though. Let us know what you find.
__________________
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07-28-2019, 05:48 PM
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#15
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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As I said earlier: I did install a disconnect on the input side's ground also...
__________________
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07-28-2019, 09:52 PM
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#16
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Site Team
Brand: Thor Motor Coach
Model: Axis 24.1 Windjammer
State: Illinois
Posts: 1,179
THOR #7074
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I'm thinking of switching around the two big positive wires on my Bimm but I'm afraid I might short something out but I'm not sure what else I could do. now that I confirm that mine is messed up. I am going to call that company tomorrow and ask them what would happen if I switched it to cables. Thank you for checking for me that helps tremendously.
__________________
Rev. Jeffrey 2017 Thor Axis 24.1 E450 Windjammer.
Silver Safe-T-Plus Steering Control
SSF-106-40 SumoSprings Solo Front Bump Stop SSR-107-47 SumoSprings Rear Bump Stop
Hellwig 7718 Front Sway Bar & 7180 Rear Sway Bar
Koni FSD Front Shocks 8805-1042 / Koni FSD Rear Shocks 8805-1043
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07-28-2019, 10:06 PM
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#17
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
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Quote:
Originally Posted by revjeffrey
I'm thinking of switching around the two big positive wires on my Bimm but I'm afraid I might short something out but I'm not sure what else I could do. now that I confirm that mine is messed up. I am going to call that company tomorrow and ask them what would happen if I switched it to cables. Thank you for checking for me that helps tremendously.
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I assume that when you lifted the negative on the chassis battery your lights went out? If so, either your BIM is not isolating the two battery banks as it should or your chassis battery is wired to the house DC buss directly (and who knows where the house batteries are wired to). Since the BIM is supposed to isolate the two circuits (House and Chassis) when no charging is going on, swapping the big positive wires will not accomplish anything. If you were going to do some swapping you would have to swap the sense wires as well.
At this point I would leave all battery negatives disconnected, lift one big positive off the BIM and check for continuity between the two large posts. There should be none. If they are connected in this state, the BIM is bad (shorted) and needs to be replaced.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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07-28-2019, 10:59 PM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 2018 24.1
State: Florida
Posts: 179
THOR #12484
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Rev, help me find my BIM on this 2018 and I’ll snap a pick if that will help
__________________
2018 Vegas 24.1
2006 Gulf Stream G24 Sprinter Van
2004 Newmar Scottsdale 3456
2002 National See Breeze 1341
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07-29-2019, 11:32 AM
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#19
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Quote:
Originally Posted by Bob Denman
As I said earlier: I did install a disconnect on the input side's ground also...
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Updated photo:
http://www.thorforums.com/forums/att...1&d=1564399954
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-29-2019, 01:42 PM
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#20
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Senior Member
Brand: Thor Motor Coach
Model: Freedom Elite24FE
State: Texas
Posts: 542
THOR #12434
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Quote:
Originally Posted by Bob Denman
... Of the two battery disconnect switches that I added to my batteries.
They actually work just like they're supposed to!
If I just set the switch to "Off" (We all know that doesn't do much...): at the end of the week, I'll be dropped from about 13.1 volts... to 11.9!
With both switches thrown: I'll still be at least at 12.7 volts!
Note: this pic only has one switch. I added a second one to the ground line coming in to the battery on the right...
http://www.thorforums.com/forums/att...1&d=1563748689
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Did you look under dash, above accelerator pedal, for a disconnect? I believe that is a factory install on Sprinters.
__________________
Freedom Elite 24FE, Big Foot hydraulic levelers. Wife is Marilyn, I am called LC
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