dat dood
+1y
See if the tail light/brake light bulbs are in backwards. I've seen this cause problems before, but don't recall if it was on a 1156 or 1157 bulb. Also, check the micro switch on the brake pedal. I had a short in a trailer pigtail once that caused me to lose all lights except head lights and brake lights. That wound up being a blown fuse in the fuse block under the dash.