A:Answer Not sure what "jumping around" means, but I have used something called "CRC 05103 QD Electronic Cleaner" on electrical contact points. I've sprayed it into a portable radio volume control and it worked wonders. I've also used it on the plug of a circular fluorescent ceiling light fixture that had trouble "starting" when switched on and flickered constantly. I suspected that the ballast was bad after changing the bulb, but sprayed the contact before replacing the ballast. Just sprayed on both surfaces of the plug and worked them in and out a few times. It dries very quickly. The face plate on my car radio (very old) makes poor contact at times, so that might be next for me.
