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Re: [GMCnet] Battery Cutoff switch [message #356490 is a reply to message #356488] Tue, 07 July 2020 11:39 Go to previous messageGo to previous message
Dave Stragand is currently offline  Dave Stragand   United States
Messages: 307
Registered: October 2017
Karma:
Senior Member
These rotary cutoff switches are easy to install (see link for picture).
I see Jim Bounds is using them now as well. I got mine for around $12
each on Amazon. Very easy to reach, to use, and to see.

http://www.gmcmhphotos.com/photos/data/7243/medium/IMG_5592.JPG

-Dave
1978 Transmode near Pittsburgh

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Ken
Burton via Gmclist
Sent: Tuesday, July 07, 2020 12:13 PM
To: gmclist@list.gmcnet.org
Cc: Ken Burton
Subject: Re: [GMCnet] Battery Cutoff switch

I have a long knife switch in both locations. I do not know where to
get them these days or who even made that type.

You want the switch electrically as close to the battery as possible.
So in my case the front one is mounted under the passenger side hood to
the
fiberglass or aluminum plate that the isolator is mounted on. I forget
which it is.

I ran the positive battery cable to the switch and then on to it's
normal termination point which is one side of the boost solenoid. On
mine the
switch opens downward. The type of switch you buy will really determine
it's mounting location. Do not install this one in line with the
negative
cable as you will have two cables rather than one to disconnect.

The simplest one to use is one that mounts directly to the battery post.
It is a little more difficult to reach there and when I had my under
hood
engine fire I would not have been able to reach it due to the flames.

I am assuming that you have rear engine batteries and a long heavy cable
going from the boost solenoid to the rear batteries. If this is your
configuration, then the rear switch needs to be mounted in the rear
battery compartment either on the top of the battery or in my case to
the rear
wall of the compartment.

You want to be able to get to is fast and easily. If you still have a
front cover on the battery compartment then these locations are not
easily /
quickly accessible and you will have to find a better location outside
of the box. Locating it up front is not an option as it will not
disconnect
the battery from the coach up there.

If you have front mounted house batteries then we need to discuss a
different option for you.

If you get battery mounted switches, be real careful in your selection.
There is a lot of cheap Chinese junk ones out there. I personally do
not
like this location because of the slightly restricted access and also
picking up dirt and corrosion but they will work there.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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1978 Transmode (403) Pittsburgh, PA

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