Lockup is very much the same as the lockup in a 200-4R ... you'll need teh TCC equipped brake switch (has one normally open circuit and one normally closed circuit) from a later model vehicle.. (80's-90's)
The normally open circuit is for the brake lights and will plug in just as the single circuit switch does.
Search TCC lockup kits and you will find several manufacturers offer different versions of the same setup.