FYI: Sylvania / OSRAM designations for replacement light bulbs: 1984 - 1988 pre-Tacoma pickups. 1984 - 1988 TOYOTA Pickup (Pre-Tacoma) High & low beam headlamp H6054 Parking light 194 Front turn signal 1073 Rear turn signal 1073 Tail light 1157 Stop light 1157 License plate 89 194 Back up light 1073 Front sidemarker 194 SOURCE: http://www.sylvania.com/ConsumerProducts/AutomotiveLighting/LampReplacementGuide