I have an 84' and the dash and tail lights only work about 2/7 days a week. I can flick the lights a million times they wont come on. Then all of a suuden while im driving, or after i restart the truck the tail and dash lights come on. I noticed the other day the main fuse for the headlights under the hood right next to the battery is hardwired directly to the battery terminal. im guessing this is why i always have headlights and though the dash and tail do not work. Any help would be much obliged!!