How to Wire a Battery Cut Off Switch
- 1). Disconnect the negative battery cable with an open-ended wrench.
- 2). Clean the negative battery post with the wire brush.
- 3). Attach the cut-off switch to the negative battery post then attach the negative battery cable to the terminal on the cut-off switch. Turn the switch to the "On" position. Test the vehicle for power; if there is no power, check the connections and fuses.
- 4). Turn the switch to the "Off" position and verify that power to the vehicle is disconnected. Return the switch to the "On" position.