Brake light switch and rear lights help

I'd like to continue the tread with a discussion about where this switch connects into the circuit. I have a 72 duster which no longer has the break pedal switch. It was a drag car so has been modified. I want to put it back on the road and this is the last thing holding me back. I have a new replacement switch and a bracket to mount it in place. Just wondering where to tap in. Any wiring diags?

Thanks,

-Rob