The TWIN Wiring Diagrams has pictures of the boards with text and graphical overlays explaining the relevant components, in addition to a illustrated wiring guide of each TWIN board.
Download: TWIN Wiring Diagrams
The Byte Bus Info has a reference chart explaining the switch settings for altering the parameters of the Byte Bus board, as well as having a chart showing an example TWIN network.
Download: Byte Bus Info
The TWIN Connections Charts show a quick reference guide for the address setting and the channel associated with it. It also shows an example circuit with the TWIN wired for proper use.
Download: TWIN Connection Charts
The Programming Connection Guide explains how to connect to a TWIN/Byte Bus board in order to program it using a ICD 3 by Microchip.
Download: Programming Connection Guide