First the horn started blowing on its own, Then the starter cranks when you push the clutch in! wtf help!!!!!!!!
My recommendation is this. FIND the steering column connector. Get familiar with RIGHT where it is. LEARN how to wiggle it back and forth and disconnect it QUICKLY. Once you have that mastered, the next time it starts acting crazy, get under there and unplug that connector fast. This will tell you at least if "something" in the column wiring is the cause. If it stops doing it when you unplug that connector you know it's in the column wiring. You will have eliminated a LOT right off the bat.