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A "battery disconnect" is nothing more than a special SWITCH designed and manufactured to be able to carry very large [heavy] electrical current. The one with which I'm familiar mounts on the positive battery terminal after the cable has been removed, and then the cable connector is attached to the output terminal of the disconnect switch. This switch allows one to totally and completely "kill" the battery voltage to the auto circuits, without having to use a wrench to loosen a battery terminal clamp and manually "wrestle" it from the terminal.
What else can I help you with?
My 106 rev counter don't work?
disconnect then reconnect the battery
Why would the horn on a 1997 Toyota Avalon not work after you disconnected then reconnected the battery?
HEY BEEVIS....NOTHING will work after you disconnect the battery......DUHHHHH !!!!!
Why do i have to disconect car battery for car stereo to work again?
You may have to disconnect and recharge your car battery for your car stereo to work again.
How do you reset the airbag light on a vw golf IIII?
Disconnect the battery. this should work.
Why doesn't my power liftgate work in 2003 navigator?
Disconnect the battery for 5 minutes, then reconnect it. It should work after that.
How to disconnect power to the battery in 2006 mini?
Disconnect the negative battery cable.
Do you have to disconnect a battery charger from the battery or can you just unplug it?
Best to unplug it and then disconnect it from the battery. Reason being is that if you disconnect it from the battery first you will create a spark. That spark could ignite any fumes from the battery.
Why won't the Radio work in 2002 ford windstar after replacing the battery?
If you disconnect a battery cable the preset radio stations and the clock has to be reset
Do you have to disconnect car battery?
If working on the electrics of a car then it is a sensible precaution to disconnect the battery.
Do you disconnect a battery when repairing a starter?
Yes, you better disconnect the negative battery cable.
Do you have to disconnect battery to install stereo on 2004 cavalier or can you remove a fuse?
It would be best to disconnect the battery but removing the fuse will also work as long as you are careful not to disrupt other hot wires while working in the dash.
Will unhooking battery cable to disarm a 1998 ford contour really work?
If you disconnect the battery cable the engine will not start and no electronics will work. So I guess you could call it disarming the car.
