In the small space of a tiny house, it is important to have the best ventilation (especially when cooking). When installing the range hood that vents to the outside, I needed a way to let fresh air in when it was running and sealed when it was off. Otherwise, it would pull too much air out of the tiny house and create a negative pressure vacuum effect. After several calls to the manufacturers and research, this is how I wired my range hood to my make-up air damper. This allows the damper to automatically open when I turn on the range hood and automatically close when the range hood is turned off.
Air damper that I used: Field Controls FAD-6 Fresh Air Damper, 6"
https://www.amazon.com/gp/product/B005XNOUKK/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
Range Hood that I used: Broan-NuTone BCSD124SS BCSD, 24-Inch, Stainless Steel https://www.amazon.com/gp/product/B071P48KT4/ref=ppx_yo_dt_b_asin_title_o08_s01?ie=UTF8&psc=1
Transformers that I used: Thermostat / Doorbell Transformer, 24V 40VA Power Supply
https://www.amazon.com/gp/product/B07Q4PPKQ8/ref=ppx_yo_dt_b_asin_image_o08_s00?ie=UTF8&psc=1