The blue manual for my 89-8v shows 2057 for the rear brake/turn and park lights. It shows the same bulbs 2057 for the front turn and park. I replaced the 4 bulbs in the rear first, no problem. Removed the front lights and the bulbs were not 2057, witch have 2 filaments, one for park and a brighter one for turn sig. The two bulbs in each of these front lights are single filament, a small #89 for park and a 1156 for turning sig. I've never read any mention of this on the forum.