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This  loco has a QSI  sound setup and a DCRU pckg I do not recognize.  I'm having a bit of thought of installing a Dallee DCRU (if it can handle the motor current) as the one in the loco now is "sticky" and my backup light only works occasionally.  I would like to know what the 4 pin connector on the loco goes to (in order). I assume the 2 brush leads, ground and  hot wire to rollers.  Also I sort of doubt if  I can get the QSI sound to work at all if I attempt this.   In this time period Ott sound and QSI are almost Identical (my opinion) and I have the Ott pckg if I need to trash the QSI  sound and just do a total overall.  3rd rail no longer has a wiring diagram for this loco.  I just called them.  The loco has constant voltage headlight and a backup light.  I've put Dallee units  in other postwar locos but I am trying to make sure I get it set up right as I cannot see where the 4 loco wires attach inside the engine.  Thanks for any help.

o gauger

Last edited by o gauger
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I have a bunch of brass steam locomotives from Williams, Weaver and 3rd Rail.  Every one of them with a 4-pin connector are wired the same.

Looking at the locomotive plug from the tender end, the far left pin is one motor brush, next is AC common (outside rails), next is AC hot (center rail) and the far right pin is the other motor brush.

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

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