I want to connect one of the existing switches (high-beam flash, or turn signal middle push button, or horn, or pretty much any other switch/button) on my motorcycle to the main switch of a garage door opener, so once I am home and hit that switch on my motorcycle, it should open the garage.
I have seen someone do it using a different logic, by keeping that main switch pressed all the time, and opening the garage by sending power through the switch on the motorcycle. However, my garage door remote has a 3V battery and I don't want to get into using the 12V->3V converters.
How can I use an existing switch/button on the motorcycle to press the main switch on this remote???
Sorry for not using the needed tags for this question, I literally don't know what tags to use in electrical engineering.