pizzaguy, with the engine running there is continuous 13.5 volts to the left side limit switch. Upon completion of it opening, there is close to 0 volts. Closing, it immediately goes back to 13.5 volts. They're simply on/off switches. That is unless they're tied into the BCM to activate the spoiler at speed.

Sounds right. They close, that is, they ground the sense going to the BCM when 'limit' is reached.

Now do you feel a regular old 10 or 20 amp double throw/double switch will work?

Sure, it will work. What I am saying is that the limit switches in the original Crossfire design will not pass 20 amps of current and will not work in the little diagram you provided. Again: the limit switches in the original design are WORTHLESS to you unless you build a microcontroller and use them in the fashion the original design uses them.

Another question: on the schematic you included, for the motor (bottom left) it refers to them as being Rear Spoiler Driver up, the other side down. What is a 'Driver' in BCM code?

That is a convoluted way of saying it. That is, the manual uses convoluted terminology, typical in the automotive world. What it all means is this:

Pins 14 and 15 provide 12 volts positive and ground. It is impossible to know what logic they use but the fact is, the spoiler motor is a simple DC motor that reverses direction when you reverse the polarity of the applied power.

MY Definition of a "Driver" is when you "drive" it with 12 volts positive, so the top half below is what I would expect. BUT they may think of a "Driver" as the applied ground, so the bottom may apply. You can only test it and see: