Battery disconnect Switch

[CampinGpa]

I have a house cut off switch in the water bay. when it is off I still have a drain on the batteries. I would like to put a battery cutoff switch on. I have two 12 volt batteries. Do I have to buy two cutoff switches one for each battery. So I can eliminate removing the negative cable and drain on the batteries when in storage. Thank you in advance

[CampinGpa]

Originally Posted by CampinGpa

I have a house cut off switch in the water bay. when it is off I still have a drain on the batteries. I would like to put a battery cutoff switch on. I have two 12 volt batteries. Do I have to buy two cutoff switches one for each battery. So I can eliminate removing the negative cable and drain on the batteries when in storage. Thank you in advance

I believe I posted this in the wrong section I apologize

[Larry-NC]

Originally Posted by CampinGpa

I have a house cut off switch in the water bay. when it is off I still have a drain on the batteries. I would like to put a battery cutoff switch on. I have two 12 volt batteries. Do I have to buy two cutoff switches one for each battery. So I can eliminate removing the negative cable and drain on the batteries when in storage. Thank you in advance

Gramps, the two batteries are connected in parallel. That means the two Positive (red) terminals are connected together and the two negative (black) terminals are connected together.

You can use a single disconnect switch by identifying the negative terminal that has two cables: one to the other battery and one to the motorhome.
On that terminal, remove the cable going to the motorhome.
Leave the cable going to the other battery, and add the disconnect switch.
Connect the cable going to the motorhome to the other end of the disconnect switch.

I will flag these posts so the moderator moves them to the right place.

[kenandterry]

Originally Posted by Larry-NC

Gramps, the two batteries are connected in parallel. That means the two Positive (red) terminals are connected together and the two negative (black) terminals are connected together.

You can use a single disconnect switch by identifying the negative terminal that has two cables: one to the other battery and one to the motorhome.
On that terminal, remove the cable going to the motorhome.
Leave the cable going to the other battery, and add the disconnect switch.
Connect the cable going to the motorhome to the other end of the disconnect switch.

I will flag these posts so the moderator moves them to the right place.

Gramps has a Cedar Creek, not a motorhome. So his connections for a 5th wheel may differ from a Georgetown where he posted here by mistake.

[Larry-NC]

Originally Posted by kenandterry

Gramps has a Cedar Creek, not a motorhome. So his connections for a 5th wheel may differ from a Georgetown where he posted here by mistake.

Connections are the same.

[wmtire]

Originally Posted by kenandterry

Gramps has a Cedar Creek, not a motorhome. So his connections for a 5th wheel may differ from a Georgetown where he posted here by mistake.

Posts were moved to their own thread here.

[CHICKDOE]

Originally Posted by Larry-NC

Gramps, the two batteries are connected in parallel. That means the two Positive (red) terminals are connected together and the two negative (black) terminals are connected together.

You can use a single disconnect switch by identifying the negative terminal that has two cables: one to the other battery and one to the motorhome.
On that terminal, remove the cable going to the motorhome.
Leave the cable going to the other battery, and add the disconnect switch.
Connect the cable going to the motorhome to the other end of the disconnect switch.

I will flag these posts so the moderator moves them to the right place.

fully greed with this! find the two negative battery terminals. there will be a jumper cable between these tow terminals. leave that cable alone. one of the negative terminals will have another negative cable that leaves the battery. it probably goes to chassis ground, maybe very near the batteries. remove this cable from the battery and attach it to one terminal of the disconnect switch. but a new cable and install it between the other terminal on the switch and the negative battery terminal that you took the cable off of.

before you do anything find out where you are going to mount the switch and make sure the cables will reach.

other options are to buy a disconnect that mounts right on the battery terminal. any auto parts store has them. i have seen knife switch versions and version that allow for an easy disconnect of the battery cable. with these you probably don't need to purchase a new battery cable.

[CampinGpa]

Thank you all very much for the response. I think I do like the battery disconnect knife switch that would probably be a lot easier because I have to get back behind the Water Bay wall locate the proper cable. Thank you all again and have a great day