Red. Anything else is suicide. Have you not seen all four Lethal Weapons?
purple
The colour red designates that the wire is used as a live wire. The neutral wire is identified as white in colour.
GREEN
It is silver in colour.
The tachometer wire on an ECU is typically purple in color.
The wire that goes in the "COM" terminal is usually the black wire, which is the common wire. This wire is used as the reference point for the circuit.
yellow
green and yellow
green
The colour of the neutral wire in Australia is blue with marking N.
The red wire is the positive wire. The black wire is the ground wire. The green and yellow wires are the speaker wires. The white wire is the auxiliary wire.
Yes, in North America the ground wire is always identified as a green colour conductor.