the alarm system on my 1976 went away (when you turn the alarm key on the fender the alarm goes off right away -it will shut off with key) all the systems went away at the same time ( door ajar - seat belt - etc ) when i reach in and feel the alarm system switch on the fender - the prong nearest the fire wall feels loose - and the plastic surrounding it looks to be chipped . any way to check the switch to make sure it is good?? or any other thoughts on what could be the culprit ??? system was working until a long road trip - thank you steve benson (50586)