The Truman Doctrine arose from a speech delivered by President Truman before a joint session of Congress on March 12, 1947.
Positive First. When installing a mower battery, always connect the positive cable first. The positive cable is red. It attaches to the battery terminal post marked with a plus sign, the letter P or the word POS. Attach the negative cable last. The negative cable is black.
Just make sure beforehand that the tender is not plugged into the outlet. Always save that step for last. Unscrew the battery cover so the terminals are exposed. Take the red alligator clip and clamp it onto the positive (+) terminal. Take the black alligator clip and clamp it onto a metal part of the bike frame. Don't clamp it onto the negative (-) terminal. Plug in the tender to the outlet. Easy as that.