Wife`s truck lost the turn signals and radio, last night. I went out this morning and they both worked?. Also right headlight low beam out , went to get new headlight and on the return trip the radio and the turn signals quit working. pulled in the drive and shut it off ,turned the switch back on and presto-everything started working again. Wife says its the switch? What do any of the electrical geru`s have to say may be the problem? thanx