These LMR sets had a DMBS to diagram 556, a TCL to diagram 582 and q DMCL to diagram 558:
These are from the Derby Works Collection:
Single Engine Conversion
3-car diagrams & Works Pics
2-car diagrams & Drivers Instructions
4-car diagrams & Works Pics
Details about preserved Class 104s can be found here.
Many thanks to Kevin Dowd for his assistance in the preparation of these pages, and to Eddie Knorn for further data.