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This is the schematic from a 2016 post that it says came from Dennis Zander. So it must be legit. 

However when I hook this up using a red and green 3mm LED (with a resistor) on pressing the Momentary PB the DZ-2500 does flip between the two turnout positions (nice) but the 3mm LEDs are both lit although one is stronger.

What am I doing wrong should not in either position the opposite LED be off not on???

Note that the white wire shown in the diagram coming from the DZ-2500C IS connected to one side of the PB even though it doesn't sort of show that. And the DZ-2500C's green and yellow wires are connected to one of the red(+) sides of one LEDs; the black(-) LED wire is connected to COM.

 

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Alan,

The circuit diagram you posted with the momentary toggle switch shows a connection on one side only.  The Yellow and Green wires from the switch machine are hidden by writing along side the led's.  Attached is a sketch that I used for DZ1000's and momentary toggle switch with led's.  Remember you are dealing with switch activation power of 12VAC.  You need a resistor for each led.  The green and yellow wires are considered the Red side of the AC power.  The black wire is considered the common.  I made a small test assembly on a 4" x 8" piece of thin plywood to test the operation prior to installation.  Hope this helps.  This diagram uses R Right and L left off the DZ-1000.

DZ-1000 Momentary SW and LED Control

Bruce

Well, I have a bunch of the DZ2500 switch machines on my new layout build, so I'll soon be looking into these issues.  I'm pretty confident that a simple solution to the LED problem is possible, but since I haven't actually wired one up and tinkered with it yet, I don't have a solution in-hand.  However, I am planning on having a panel with indicator lights, so I will be solving this puzzle at some point.

So using the anti derailing yellow and green lines for the LEDs, results in the appropriate one lighting the appropriate LED. But there is a bit of residual voltage on the other LED, dimly lighting it.

As GRJ suggested above, using a relay for the LEDs is a solution. Driven by either the yellow or green line. And you also could momentarily use those lines to trigger the change in the switch as shown by Bruce...or as shown by Dennis, pulse the white wire on the DZ-2500.

That’s a 17+ dollar fix. Maybe cheaper sensitive to trigger relays can be found on ebay.

gunrunnerjohn posted:

Well, I have a bunch of the DZ2500 switch machines on my new layout build, so I'll soon be looking into these issues.  I'm pretty confident that a simple solution to the LED problem is possible, but since I haven't actually wired one up and tinkered with it yet, I don't have a solution in-hand.  However, I am planning on having a panel with indicator lights, so I will be solving this puzzle at some point.

This topic kind of hit home.  I have about 16 switches using DZ-2500 machines.  When I asked Dennis Zanders about it, I was told it was normal and you relly can't do anything about it.  Well I see here that this may be addressed and a possible solution at hand.  I am anxious to see the findings.

FWIW, I just live with it.  It is kind of annoying when you explain the led's to guest visiting the layout.

I use the green and yellow for anti-derail.  Can't live without that feature.

Bryant Dunivan 111417 posted:
gunrunnerjohn posted:

Well, I have a bunch of the DZ2500 switch machines on my new layout build, so I'll soon be looking into these issues.  I'm pretty confident that a simple solution to the LED problem is possible, but since I haven't actually wired one up and tinkered with it yet, I don't have a solution in-hand.  However, I am planning on having a panel with indicator lights, so I will be solving this puzzle at some point.

This topic kind of hit home.  I have about 16 switches using DZ-2500 machines.  When I asked Dennis Zanders about it, I was told it was normal and you relly can't do anything about it.  Well I see here that this may be addressed and a possible solution at hand.  I am anxious to see the findings.

FWIW, I just live with it.  It is kind of annoying when you explain the led's to guest visiting the layout.

I use the green and yellow for anti-derail.  Can't live without that feature.

The yellow and green anti-derail lines can be used for the rail triggers and a momentary lever switch at the same time. The switch just mimics the anti-derail action of a wheel pulling the rail to common voltage. This would be my preferred home grown switch if not using the supplied DZ-2500 switch.

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