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6450.6aĆa
1999
Pin Assignments (Z3 Versions)
03/00
BM
BMW
BMWBMW
Z3
E = Input, A = Output, M = Ground
X18349 8 Pins, black
X18350 6 Pins, black
X18349
Pin Type Description/Function Connection
1 E Terminal 15 Heating blower relay
2 A Activate compressor clutch Instrument cluster
3 A Blower level 1 (air conditioning) Blower resistor
4 E Terminal 15 Heating blower relay
5 A Blower level 1 (air-recirculation) Blower resistor
6 M Ground for function lights Ground point
7 E Terminal 15 Heating blower relay
8 A Activate fresh air-recirculation Fresh air-recirculation motor
X18350
Pin Type Description/Function Connection
1 Not used
2 M Ground Ground point
3 E Climate-ON-signal Air conditioning/recirculated air operating
unit
4 Not used
5 A Activate A/C compressor Pressure switch
6 E Evaporator temperature Evaporator temperature sensor