Event Input | Possessed Pawn

How can I use the Input Events specified in project settings while possessing a pawn that is based off default pawn? I have searched and searched but cannot find the info I am looking for.

Player possesses a pawn that is for example, an RC car. The goal is to possess the RC car and then using input event (left mouse button) toggle a light.

Also, is there a way to customize the input for movement on a pawn that has Movement Component inherited from Default pawn?

Much thanks!