It would just be easier to make a toggle switch, attach it to one mini gun and then wire it to the other one so it makes a chain. That way one button all of them turn on and it looks cleaner
I have another way to make a car in melon playground first you grab a present and bash it lightly on the ground until you get a car toy and then you grab a wheel from the inventory and then put the resized car a little bit above the ground and get rid of collision and then you put the bolt feature on and and attach the wheel to the car put the car on the 3rd layer so it hides the wheel and then you have a working car
I also make my own cars and I make them nicely destructable like split it in half, sadly I am not showing any evidence but I swear I have a curved car which looks really good, just trust the process guys
If you are slightly lazy retoggling the miniguns use a button toggle in the mechanics section, attach it and click the + thing in the bottom right of the screen and get the one rainbow with arrow on top select that and make sure to start on the button toggle and carefully connect it to the miniguns and it can automatically turn on when you turn on the button toggle