Farish Class 66 DCC Fitting

Tuesday, March 21, 2006

(For fitting instructions for other Bachmann/Graham Farish diesels see here).

At the time of writing the Bachmann/Graham Farish class 66 is unique among N gauge British outline models in being the only one which has a chassis that was designed with DCC in mind. It therefore seems like the ideal candidate to use as the subject of a first DCC conversion. Full instructions for conversion are included with the model, but this article should prove of use to anyone who has yet to purchase or who has lost their instructions.

The body is attached by a clip at each corner. The best way I have found to remove it is to hold the chassis each side of the buffer beam with one hand, gently grip the cab sides with the other and wiggle the body free. Repeat this at the other end.

Remove the small screw at each end of the circuit board and lift it straight upwards. Be careful not to damage the motor power clips underneath the board (see the next photo).

The decoder wires are soldered to the connectors marked 1-8 on the board. Remove the two ‘DC clips’ from the circuit board, then solder the wires in the following sequence:

Connector	Colour
8	Red
1	Orange
2	Yellow
4	Black
5	Grey
6	White
7	Blue

(Note that the connector numbers are out of sequence on the circuit board and the above listing is from left to right).

Attach a small piece of insulating tape to the top of the chassis under where the connectors will go to prevent any shorts and screw the board back on.

The decoder can now be secured onto a self adhesive pad in the recess to the right of the connectors. Normally the decoder would fit underneath the lighting wires, but I managed to cut the wires a little too short and have fitted it above them, as shown.