Union Mills Class 3F DCC Conversion

Mistakes may damage your locomotive, controller or other accessories. Use a multimeter to make absolutely sure you have completely isolated the motor from the track before testing. Always use the Programming Track for testing. Our guides are provided for reference only, and you proceed entirely at your own risk. Unsure about something - try our DCC Conversion Service instead.

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This guide covers the Union Mills Class 3F models, including:

• Union Mills Class 3F BR Black 43766

Refer to the Union Mills J39 (old chassis) guide for the detailed step-by-step guide on installing a decoder in the cab, there isn't enough room inside the tender on this model.

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