Hello all, New to the site and I just picked up an 86 k20 from a guy who was gonna scrap it. He said it ran fine and one day just died while driving. I’m not a mechanic I’m a parts changer so I can turn a wrench but I don’t have ton of knowledge. I checked the fuses and the ground to the alternator. All good The headlights work but nothing else. When you turn the key on No radio. No turn signals Nothing. He did say the wiper stopped working shortly before it died. Anyone got any ideas.