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| Hey Pokey,
Okay. It looks as though there's an easy solution to all of this. I actually work in the field of actuators, and the one that you have looks quite a bit similar to this one: http://www.progressiveautomations.com/actuators-linear-actuators-c-...
I have a limit switch diagram that I'll link for you, but honestly, why not just go for some external limit switches and cut out the diode? One of the easiest ways to do it is like one of these guys here: http://www.progressiveautomations.com/actuator-limit-switch-ac-24.a...
It has two wires, and it's installed between your actuator and your rocker switch. You just connect the positive and negative. The nice part is that it already has a diode installed so the polarity is reversed once it gets hit. You just have to position it so that the actuator depresses the button when it reaches its maximum stroke. If the actuator you have is working for you, there's no need to grab a brand new one. But that limit switch will solve the problem you're having.
Also, who sells an actuator without an internal limit switch? Seems odd.
Oh, and the limit switch diagram:
http://www.progressiveautomations.com/images/pdf/Limit_Switch_Wirin...
If you need to rig up the diode, it needs to be soldered on the two leads that are furthest from one another. So ignore the middle one. There should be three. That should be it.
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Linear actuator limit switch wiring? How to?
