sailnyoda
I need to wire two LEDs by using pin #3 for a signal but cannot find a complete circuit diagram for all of the components. I have the DC power connected to a DPDT toggle switch and the power output wires connected to the Omega motor pins #1 and #2. Now I need to connect the power from pin #3 to the LEDs and complete the circuit back to the toggle switch.

The LEDs is for a signal red and green when the Omega motor is activated.
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AHJAY
The instruction for adding LEDs to Omega very simply is on page 8 of the Omega manual. The manual is on our website and you can download it if you do not have the original.

If you want to add resistors to balance the colour use the second switch, not 1.2.3 - I'd use 1~5k on the red and perhaps 5~10k on the green to balance the colours and keep them from being too bright. (actual value will depend more on the type of LED than anything). If you did that one side of the DC power would go directly to the LEDs, the other to the LEDs via the switch.

regards, Ahjay
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sailnyoda
My understanding is the Classic Omega has resistors built into the motor. Thus eliminating the need for external R. I looked at the manual and it only shows pin 3 going to "LED" and doesn't show which side of the LED (positive or neg)? Also, if it goes to the positive side, then what is connected to the negative side of the first LED. In other words, how are the two LED leads connected. 
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AHJAY
Yes, the impedance of the motor circuit is enough to keep the LEDs safe and give a simple control panel approach, but as a signal, you really do need more control over the LED light levels if it is to look realistic. That is why I suggested that you use one of the other switches rather than the motor drive circuit, because green and red need quite different resistance values to balance their light output.

On page 8 it shows the simple back-to-back arrangement of the LEDs. You wire them exactly  as shown in the manual - with the positive of one to the negative of the other and vice versa.

This arrangement of the two LEDs is then simply inserted :in series with one of the two wires from the switch.  Because the polarity will swap when you change the point, one LED will turn on and the other will turn off.  There is NO need for the third terminal.

regards, Ahjay
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sailnyoda
Great information. Thank you Ahjay. The small manual that came with the motor doesn't the back-to-back LED arrangement. I got the concept of having the LEDs in series. I'll give it a try.
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sailnyoda
I just saw the reference to the LED series in the manual. My eye sight is not so good these days..😎
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m.bryan
The Omega manual is here:
https://www.dccconcepts.com/manual/owners-manual-cobalt-classic-omega-point-motors/

The back-to-back (inverse parallel) LEDs are on the lower right diagram on page 2.
Mick
DCCConcepts Tech/Customer support
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