1989 Chev 1500 Truck 4.3 Wire Harness Fuse Box Diagram 1989 Chev 1500 Truck 4.3 Wire Harness Fuse Box Map Fuse Panel Layout Diagram Parts: junction block cover, distribution, coolant temperature switch, A/C compressor, harness ground, oil pressure sensor, generator, wiper motor load, engine temperature, bulkhead connector lead, shield, knock sensor, oil pressure sensor.