Bike Control

I've been trying to make a bike which can be used on a skatepark, I followed the car TUT but it seems a little confusing with me only using 2 wheels. I've set wheel coliders and everything but I can't seem to get the bike to move. Would I also have to add coliders to the handle bars which is in a game object with front wheeel etc so if left is turned it moves all the handle bars and the wheel too? is they a simpler way of doing this for me to be able to attached things to. I only really need it working for now.