IIN MII CAUSE IIT IIZ BLACK. Positive is normally red.
The post is just lead, gray color. The cable is sometimes colored red. The battery could also have a "+" symbol to mark positive.
Red
Normally red or brown. The battery has a + stamped into it by the positive terminal. Follow the wires, on a modern car the positive will go to the alternator and starter. The negative wire (easier to...
Positive is either red or has a "+" symbol.