Wiring Diagrams

The following two items (courtesy of Chris Bull) are 'schematic' wiring diagrams. They show the circuits for each topic presented in a simplified way that make it easier how the items are connected and how each circuit is related. In many of the diagrams the wires run into a common 'loom' at the top of the page so there are less wires to follow.

Other wiring diagrams may show electrical components laid out as they are on the vehicle and every individual wire is shown.

Electrical Schematics for Class 101 DMUs

The first set is for Class 101s, dating from February 1992. This is a 2mb PDF.

Electrical Schematics for Class 117 DMUs

The second set is for Class 117s, dating from January 1992. This is a 4mb PDF.