Stratford & District Model Railway Club
Modelling Information => Modelling Tips & Guides => Topic started by: Martin on November 30, 2025, 12:11:58 PM
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Having been asked a few times about which rail should be positive, the image below should help...
(https://sdmrc.co.uk/sdmrcwp/wp-content/uploads/2025/11/DC-Protocal-Polarity-300x253.jpg)