INSTALLED A 15A FUSE INTO FUSE HOLDER FOR FACTORY FOG LAMPS AND TURNED ON FACTORY SWITCH AND SMOKE CAME FROM UNDER DASH BY WIRING HARNESS. WHEN SEEN SMOKE, TURNED OFF THE FOG LIGHTS. NO BURN MARKS SEEN. TRIED STANDARD HEADLIGHTS, THEY DON'T WORK. TRIED TO START VEHICLE, NO START. BATTERY WENT DEAD. CHECKED SWITCH FOR HEADLAMPS. CONTACT POINTS BURNED. FUSE DID NOT BLOW WHEN SMOKE HAPPENED. 15A FACTORY SPEC. 15A INSTALLED. NO OTHER FUSE'S BLEW EITHER. TOOK TO AUTO ELECTRIC SHOP. INVESTIGATING. BRYANS AUTOMOTIVE OLYMPIA, WA (360)459-7235. ALL OTHER POWER ITEMS STILL APPEAR TO FUNCTION. CL MODEL ASTRO. 2 DR AWD. GM NEEDS TO INVESTIGATE PROBLEM! *AK