Disconnect 12V power. See 12V/LV Power (Disconnect and Connect). Remove the cover for the 12V positive terminal. Loosen the nut that attaches the positive lead to the battery, and then remove the lead from the battery. 6 Nm (4.4 lbs-ft) Tip: Use of the following tool (s) is recommended: 10 mm deep socket. ¼ in std ratchet. 4 in extension.