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I have 3 variations on these RS-1 switchers from Atlas, all in Santa Fe zebra stripe paint scheme. One has full sound and DCC installed from the factory (5876-3 from 2010); one has 2-rail TMCC installed (5876-2 from sometime in the early 2000s); and one (7876-1 from 2002) is just straight DC. This is the straight DC version that I am upgrading.

Even though this version is straight DC, it did come with directional lights and smoke and speaker (because it was billed as "DCC ready"), and I wanted to keep it all. Was just a matter of tearing out the DC board and connecting everything (plus a couple resistors) to the ESU LokSound.

Here is where the headlights connect to the board.

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Here is track power coming into the board and motor control leaving the board.

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Got some basic connections soldered to the LokSound board (track power in, motor control out, common and headlight control). Excuse my horrible soldering, still a work in progress!

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Removed speakers to solder connections. (yes that is Atlas switch wiring that I am using!)

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More awesome soldering.

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Hard to see, but I got the smoke unit connected to common and AUX3.

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Tidied things up a bit with a small piece of foam board and a couple miniature zip ties.

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Put everything back together and we are in business!

Thanks for watching.

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I had a pair of Atlas electro-couplers that I was going to install, but the larger coupler boxes don't fit in the chasis. I got out the TMCC version of this switcher, which comes with the electro-couplers, to compare.

First, notice the space around the coupler box on the DC version is just black, but painted zebra stripe on the TMCC version.

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I also noticed there is an extra piece to the DC assembly.

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I'm guessing these two different arrangements are to ensure that there is enough space for the electro-coupler on the TMCC version, but also to ensure that each coupler rides at the correct height.

Anyways, I decided to leave this model with just KaDee couplers. Next upgrade is to change the TMCC version to DCC, so there I will have a chance to wire the couplers to the LokSound board.

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OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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