Help finding or constructing a new convertible top switch for my 68 Dart

So my switch was completely missing as was much of the car...I did a little research and bought this on eBay

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Description...from eBay seller
Universal Power Convertible Top Switch.

3 position switch, on/off/on toggle. Momentary, 50 amp rated.

*This switch will work for any 3 wire convertible top switch, 1955 and newer. Some, mostly ford switches will have more than 3 wires. This switch will NOT work for those applications.
* It is a momentary switch which means that the knob is spring loaded and will automatically return to the center/off position on its own when you take your finger off of it. This is very important to avoid accidental damage to your convertible top hydraulic system!
* It is rated for 50 amps, which again is very important. Your convertible top motor/pump assembly draws up to 35 or more amps on initial start up while developing enough pressure to get the top cylinders moving. Any switch rated for less than 50 amps will burn out quickly, and possibly do damage to your convertible top motor.
*Designed to be mounted through a 15/32" inch hole, (half inch). Its recommended you mount it in a hole in the lower part of the dash, and leave your unused original one in place in the dash for cosmetic reasons. But every application is different and up to the installer.


plus I added a 30 AMP Marine grade circuit breaker to the middle (HOT) of the 3 poles (the switch itself is rated at 50 but if something went wonky I was NOT going to want a dash BBQ). From the wiring diagrams this is what the factory did. Hope this helps.