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Wiring Jack Wabbit with Peco Snap Coils

Posted by on Nov 23, 2015 in Tech Specs, Tips DCC Components |


Jack Wabbit Snap with Loconet shown

More info on Jack Wabbit Quad

I have purchased the Jack Wabbit Quad With LocoNet For Snap Coils. I am trying to wire snap coils (peco) for auto throw on electro-frog turnouts. On the twin coil, I have the common wire on pin 2 and the other two (ends) of the coil to pins 1 and 3 of J4. I have the two trigger rails going to pins 5 and 6 of J1.

I have read the following sentence (Page 8, sentence 5.) of the instructions:
“If you are using snap coil turnout motors instead of the Tortoise, your wiring for Auto Throw is the same as above except that the contacts must be provided by your switch motor instead of the Tortoise, and the connections to the switch motor itself use either two or three wires, as appropirate to Jr4.”
In other words it appears I need to add more wires/switching to the two wires going to pins 5 and 6 of J1.

So, my question is exactly what else do I need to do to the switch motor to “provide the contacts by my switch motor” as stated in sentence 5)? Sorry, I am totally lost-  Thanks so much, Steve S. in Kansas

Hi Steve, Page 3 paragraph 6 provides information on how to connect the coils to J4. It appears that you have done this correctly. Make sure CV79 for each switch is set to 1. At this point, you should be able to operate your switch either with a manual command or a DCC command to accessory (switch) address 1. 

For auto throw to work, you have to route power to the trigger rails. With the switch in the Clear position, the Clear frog trigger rail should be powered, and the Throw frog trigger rail should be unpowered. When you move the points to Throw, the Throw frog trigger rail should be powered and the Clear frog trigger rail should be unpowered. 

To do this, you need a DPDT (double pole double throw) switch. The Tortoise motor has the DPDT switch built in as shown in the drawings. For Peco, you will need to add a PL-15 to the PL-10 switch motor. The PL-15 gives you two double throw contacts (DPDT switch) that follow the PL-10 switch machine motion. These are then wired as shown for the Tortoise. If the power routing to the trigger rails works as I described above, then auto throw should work.