Linus of Linus Tech Tips had a video [1] where he tried just that on a new Chamberlain opener with MyQ built in, and couldn't get it to work, the wires would ac

Linus of Linus Tech Tips had a video [1] where he tried just that on a new Chamberlain opener with MyQ built in, and couldn't get it to work, the wires would act as antennas and trigger the door randomly, just from stray RF. The button panel for my ancient opener runs off of two wires, and each button is connected through a different value resistor, so I'm assuming the way it works is it measures the voltage drop to tell if you pressed the door or the light button. But, just connecting the two leads from the opener is enough to open or close the door, and I never use the built in bulbs on the opener anyways. 1: https://www.youtube.com/watch?v=x7pSkVarixU https://www.youtube.com/watch?v=x7pSkVarixU