SECTION 150 1973 79 8 TRUCK SERIES TOO 500 YEAR MODEL RESTRICTIONS PART NUMBER DESCRIPTION TY 15840 MASK TRANSMISSION CONTROL SELECTOR DIAL wax All wm BVT 15840 A 1 EE I 15A851 SWITCH ASSY PARKING BRAKE SIGNAL LAMP also refer to rou s ZB257 2B264 79 E350 Su er van School Bus D9UZ 15A851 A D9UB 15850 AA 1 15K857 WIRE ASSY PARKING BRAKE SWITCH vv B500 vw MHZ 15 8sv A 1 79 E350 Su er van Sch00 Bus D9UZ 15K857 A D9UB 15A850 AA 1