So i have all of my wiring ran and connected. I have tail lights, running lights, turn signals, hazards as well. The only issues i still have is my brake lights and my high low selector switch. I'm using the dimmer switch from an early mustang mounted on the floor. it has 3 terminals and I'm not really sure how to wire it up.

As far as the brake lights.. I have the willwood pedal box and F5R supplied plunger style switch. The harness (ron francis MK4) has a connector that doesn't seem to fit the switch. The switch itself has 4 terminals on it and the connector on the harness has 2 wire.. Not sure how i need to run this but its the last thing from having me take the car home for my sons 9th bday this week..

Thanks for the help as always!