My friend crashed his '05 636 and I bought it from him. The bike has no gauge cluster. I put the keys on, turn it the the "ON" and i hear a crank BUT it doesnt do anything after pressing the ignition button. I havent really worked on it yet and wondering if the bike really wont start without the gauge cluster. I found where the vehicle-down sensor but I don't know what to do. Any step by step advice guys?