Otis relay logic traction prints

Looking for prints for a early 80's otis relay logic traction car. Selector box consist of proximity sw's that are activated by long square bar attached to tape. Controller consist of a bunch of ice cube relays. Looks like newer style pie plate selector w/o pie plate. Any help would be appreciated.

Sounds like an MRS

If you have the Otis Machine number / sales number you can order the wiring diagrams directly from UNITEC. Unfortunately they are vary expensive.