I need to fix the turn signals on my 53 Chevy Bel Air. It's cold here in Idaho and my arms are freezing off. I'm not sure what's wrong with the unit but the signal arm is loose and there's no clear diagram for figuring it out in the repair manual. So, before I launch into this and do something stupid, I thought I'd ask for some advice. Is this a simple enough of a procedure that I can do it myself or should I seek the aid of a professional? Is there a diagram out there somewhere that shows how ithe switch and turning unit go together inside the steering wheel? Would I be better off if I purchased one of those all inclusive units that you can attach to the outside of the steering column, connect it to the lights and call it good? Thank you.