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.
4. Clamp the other end of the positive jumper cable to the positive battery terminal in the booster car. Again, confirm that a plus sign is next to the battery terminal. Connect the negative cable end to the negative battery terminal in the booster car. Now that the negative cable is connected to the battery terminal, you can attach the other end to an unpainted metal surface on the engine of the car with the dead battery. If a labeled remote negative terminal is available, use it.