How to convert Graham Farish Double Digihat to DCC

Older Graham Farish diesel and electric models manufactured in the mid nineties have a more modern split-chassis arrangement, but still use brass bushes to provide power from the chassis to the motor. Similarly to the steam locos, when converting to DCC, these brass bushes need isolating from the metal chassis. This is done using two plastic digihats, one for each side of the chassis.

For a full step-by-step guide, see Class 90 90022 'Freight Connection' Railfreight Distribution Grey (8828).