| 290 / | HD | PRIME-MOVER DYNAMO PLANTS |
| 7 | DF | ELECTRIC CONTROL {10} |
| * | | .~ Traction {5} |
| 9 | DF | .~.~> Electric traction motor {3} |
| 22 | DF | .~.~> Starting and generating dynamo {2} |
| 27 | DF | .~.~> Electric-starting motor with generator |
| 28 | DF | .~.~> Electric-starting motor |
| 29 | DF | .~.~> Rotary field and armature |