This SPST lighted switch (red when on) will handle 20 Amps at 12 VDC.
The operator needs to attach supplied angle switch holder piece to vehicle with supplied bolts.
One hot connection for both the lighted switch and the switch mechanism, ground for the light circuit (3 connections total) for both circuits.
The post closest to the metal bracket is the ground for the lighted switch.
The middle post is for the 12 VDC.
The post furthest from the metal bracket is the source (to control/power the light)