Atlas #6931 dwarf

Hi, RRnebie, Try wiring up to your Signal to the control switch not the switch machine.

That's one that you use the for the control switch machine. 

Good luck, John

I have no dwarf signals or Scaletrax switches, but here are a couple of wiring diagrams for the #6931. I use Atlas track and switches and might possibly be adding some #6931's someday, but it a long way down the to-do list.

The 6931 is designed to be wired two ways.

(1st) is with Atlas switch motors. Using the supplied PC board with the lights.   The impedence of the switch motor coil is key to correct function of the lights, it was designed to work with the Atlas twin coil switch motor.   If it didn't work with the existing Atlas switch motor, it was suggested that the Atlas switch motor be replace to acquire the correct impedence.   In some cases where one 6931 was used with a Switch motor cross over set, diodes were added to correct problems.  There are diagrams on the website for this.   Matching or wiring a 6931 to an MTH switch motor would require the correct switch motor  impedence.   Click on the underlined phrase to link.

(2nd), 6931 with the 6924 universal switch control board.   Should be straight forward the 6931 plugs to the 6924 board. There is an enabling jumper that has to be position to power the light from the 6924 board.  This instruction sheet.  Click on the underlined phrase to link.