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.
It has been stated that 85 per cent of 12-volt batteries fail before they should. When hooking up deep cycle RV batteries there are two different wiring types. A parallel hook-up is used when there is more than one 12-volt battery. The positive posts are connected together, as are the negative posts.