The Ford Barn - View Single Post - Battery disconnect switch- on positive or negative

sommcain · 10-12-2017, 08:29 PM

Always place a battery disconnect on the ground side regardless of polarity of the vehicle. ie for a positive ground or earth, put the switch on the positive cable. Also, when disconnecting a battery always disconnect the ground/earth first. This is because the whole frame/chassis/body of the vehicle is the ground or earth of the whole vehicle, and by disconnecting the ground you avoid shorting out tools etc while working on the system or moving the battery in and out.

10-12-2017, 08:29 PM	#10
sommcain Junior Member Join Date: Nov 2015 Location: Adelaide Australia Posts: 5	Re: Battery disconnect switch- on positive or negative Always place a battery disconnect on the ground side regardless of polarity of the vehicle. ie for a positive ground or earth, put the switch on the positive cable. Also, when disconnecting a battery always disconnect the ground/earth first. This is because the whole frame/chassis/body of the vehicle is the ground or earth of the whole vehicle, and by disconnecting the ground you avoid shorting out tools etc while working on the system or moving the battery in and out.