6 pin starter harness wiring

Im used to having one 12v constant power but this one has two and from the phrasing I think is has 3?this is exactly what it says

BROWN WIRE : second ignition Output (+). the brown wire provides +12v for a second ignition wire. This wire may instead be programed for use as a second accessory or second starter wire

what does this mean because there are other wires one already goes to the ignition on/run position, and one for the accessory position, and one going to the vehicle' starting wire. I have a 1994 chevy caprice.