Heavy duty ON-OFF-ON double pole switch. This switch can be used as an indicator switch, a fog or spot light switch or a change-over switch with Off in the middle. It has 6 terminals and can accommodate two separate circuits. Maximum loading is 20 amp at 12 volts (1 headlamp = 5 amp). The Supply (from battery) is wired to the two centre terminals and the Load to either of the two outer terminals. Requires a 12.5mm mounting hole.