Electrical question/doubt

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Moris		#1 Posted : 06 January 2026 09:26:28(UTC) Retweet
Joined: 11/05/2007(UTC) Posts: 23		Hi All I'm planning to add some bumpers with light (24978) to my digital layout powered by a CS3+. These bumpers use the outer rail (O) as the return path for the lamp, which means I'd have to connect the brown wire from the 6647 analog transformer I use to power miscellaneous lights to the outer rail of my layout. Could this be dangerous for the CS3 in any way? Thanks, regards. Maurizio
		60216 CS3+ with 60175 Booster, Mostly Era III & IV German and USA Diesel & Steam Loks, C-Track Layout (always under construction...)


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H0		#2 Posted : 06 January 2026 09:42:10(UTC) Retweet
Joined: 16/02/2004(UTC) Posts: 15,549 Location: DE-NW		Originally Posted by: Moris Could this be dangerous for the CS3 in any way? It's dangerous if the yellow output of the 6647 touches the centre rail of the CS3.
		Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS

2 users liked this useful post by H0		Moris, marklinist5999
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Moris		#3 Posted : 06 January 2026 10:13:39(UTC) Retweet
Joined: 11/05/2007(UTC) Posts: 23		Originally Posted by: H0 Originally Posted by: Moris Could this be dangerous for the CS3 in any way? It's dangerous if the yellow output of the 6647 touches the center rail of the CS3. Thanks... there's no risk the yellow output of the 6647 touches the center rail of the CS3, only the brown outputs/wires of the CS3 and 6647 (ground) would be connected together via the outer rail.
		60216 CS3+ with 60175 Booster, Mostly Era III & IV German and USA Diesel & Steam Loks, C-Track Layout (always under construction...)


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