Easy enough to do. That late model trans should have the dual function switch. You should have a brown wire that goes from starter relay to that switch. You've identified the 2 wires for reverse lamps. Route them through the firewall and tape in with the brown wire. You'll need the 3 wire harness connector that goes on that 3 post switch. I don't know if that's available in the aftermarket. Parts Wanted should get you one.
