So here is a question. I just bought one of those aftermarket park assist, I changed the rear bumper out to body color and got one that had the holes already so I figured why not. Anyways I am going to buy the switch bank with the park assist, TC, and Cargo lights. My question is this, I have no idea about that kinda wiring is installed in the truck at the moment but either way is the latching relay part of the switch bank for this switch or do I need to buy one separate? I plan on just intercepting the speaker itself for the beeping and not then entire unit.