![](http://farm8.staticflickr.com/7305/8943899930_36b14b9c68.jpg)
Here is how I suggest as a way to make the batwing drive.
The drawing in the corner shows a cross shaft with linkage to the batwings and driven by a linkage from a power window drive. The cross shaft can be placed anywhere there is a clear area from side to side.
The wiring shown is operated by a temperature switch like those made for radiator fans that turn on when a pre-set temperature is reached and turn off when the radiators are cool enough. This also has a manual switch to lift the batwings. I included a timer circuit because if you leave the switch on and walk away, the circuit would continue to power the relay #1 and never shut off. Including the timer circuit is just a safety feature. When the timer times out, the batwings will close. If you use a momentary switch you do not need the timer circuit but the batwings will close when the button is released.
Relay #1 when activated by either the temp switch or manual switch sends 12VDC through the “UP end of travel switch†and on to trip the relay #3. Relay #3 trips and connects 12VDC to the drive motor, moving the batwings up until it trips the end of travel switch and stops power to the circuit. Relay #1 can remain tripped by either switch but the power will not go anywhere.
When relay #1 is de-energized the 12VDC returns to the “DOWN end of travel switch†and on to trip relay #2. Relay #2 trips and connects 12VDC to the drive motor, moving the batwings down until it trips the end of travel switch and stops power to the circuit.
In either up or down position the end of travel switches prevent any power drain when the batwings are at their end of travel.
RT