When any vehicle ages, the first thing that happens is corrosion hits electrical connectors, the second is the shells of those connectors get brittle and lose the ability to stay tight. Deoxit can be bought at Radio Shack, or any Commercial electronics supplier. As an Engineer I have been using the stuff for decades, and have found myself NOT replacing electronic components that standard operating procedures called for replacement of. It isnt cheap, but it is easy to use and it is worth it's weight in gold because it prevents the otherwise called for replacement of parts that would cost a lot more, in many instances... MAJOR THUMBS UP TO DaveDaDodge for BOTH points of his recommendation!!!!