I'm working on a project on my 2006 F150. The project involves a remote control system which will be wired to the battery. I want the remote control system to only work when the vehicle is in park for safety reasons. How can I wire the system to only work when the vehicle is in park? I would greatly appreciate any help or advice.

 

I am typically really good with wiring, but you may want to get with a car stereo place to help you.