i was thinking about purchasing a linear actuator (product code FA-RA-22-12-4), but none of the pictures include any wiring to connect it to anything. does anyone know anything about it?
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Hi @brosadom and welcome to our forum!
This actuator is with limit switches.
It basically has two wires (red and black).
When you apply voltage (12VDC in this case) it moves forward. If you reverse polarity, it moves backwards. Simple as that 
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Hi @brosadom! Welcome to the community!
You can also check the Wiring Diagram Generator if you want to add a switch as well
And the tutorials for other configurations
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