Purchase a Kit

Add power to the Dwarvin Snap controller either using a 9V supply (barrel connector) or directly from your AC or DC bus via the 2-socket connector on the right-hand side of the unit.

Purchase Individual System Components

Snap Bipolar 2 Wire

A unique feature designed into this system is that it remembers the direction of the turnout from the last time it was used, even when power has been interrupted.

Another unique feature is that it can be used with either AC or DC power, directly from the turnout power! You can also cascade each controller so that you only need to power one and all are powered.

Finally, if a combination of turnouts is used, such as in a ladder, and each does not need 3 dwarf signals attached, then:

1. A mix of these products will provide a less expensive way to signal the ladder (see note below).
2. The spare fiber spaces on the Controller can be used to connect 2 fibers from the controller to a turnout display board.

The assembly couldn't be simpler:

1. Connect 2 wires from the left hand 2 socket connector on the Dwarvin Snap Controller to the Snap machine switch control unit - no soldering needed.
2. Add power to the Dwarvin Snap controller either using a 9V supply (barrel connector) or directly from your AC or DC bus via the 2 socket connector on the right hand side of the unit.
3. Finally, insert the Dwarf Signals into the layout where required and insert the fibers into the Snap Controller.

Mounting your Dwarvin Turnout Signals

1. Attach the velcro piece provided to both the Turnout Controller and any of the 3 non-functioning surfaces of your switch machine.
2. Connect the wires from the Turnout Controller to the power supply wires on your switch machine using the suitcase connectors (or spade connectors if requested).
3. Check there is light from the Turnout Controller that gets switched when you throw the switch. If not, you have not connected to the correct wires or made an incomplete connection.
4. Drill 3 holes (5/32 drill) at the 3 approaches to the switch and mount the 3 signals into the layout, inserting the fibers through the holes first.
5. Selecting the correct fiber insertion: The following chart provides the insertion steps. Note that the end of the fibers corresponding to the red light on the signal are marked red. When the switch is set so that the locomotive goes straight through, the signals going into and out of that line should be Green for go, but the one coming in from the branch should be red for stop. Likewise, when the switch is thrown and it is in what we will call the “switched” mode, all the lights should be reversed.
6. Set the switch to be “straight”, then insert the fibers as shown below into the part of the block that is lit - we will call that the “straight” section of the block. The individual signals will be lit according to the designation below. Now insert the remaining 3 fibers into the “Switched” section of the block that is lit.

For more information, click on the following links

• How it works
• Types of lighting systems
• All about fiber cables