All Wiring Diagrams for BMW 525i 1991

COOLING FAN

Auxiliary Cooling Fan Wiring Diagram for BMW 525i 1991

List of elements for Auxiliary Cooling Fan Wiring Diagram for BMW 525i 1991:

• 1989 only
• 1989/
• 1989/1990
• 1991/1992
• 1991/1992 only
• 525i
• 535i/ m5
• 85b
• Air conditioning relay (1989 only)
• Auxiliary fan motor
• Compressor control relay
• Engine control module (dme) (rear right side of engine compartment)
• Ex 1989
• Front power distribution box (rear left side of engine compartment)
• Fuse f25 30a
• Fuse f29 7.5a
• G100 (front left side of engine compartment)
• G101 (front right side of engine compartment, ahead of wheelwell)
• High speed relay (rear left side of engine compartment)
• Hot in start and run
• Ihkr
• Ihkr 2
• Integrated climate regulation control module
• Integrated climate regulation control module (1990)
• Normal speed relay (rear left side of engine compartment)
• Only
• Pressure switch (right front side of engine compartment)
• Temperature switch (top right of radiator)

Electrical Box Fan Wiring Diagram for BMW 525i 1991

List of elements for Electrical Box Fan Wiring Diagram for BMW 525i 1991:

• E-box fan (rear right side of engine compartment)
• Front power distribution box (rear left side of engine compartment)
• Fuse f17 7.5a
• Fuse f28 15a
• G123 (rear right side of engine compartment)
• Hot in start and run
• Instrument cluster
• Nca
• Oil pressure switch (front of engine, on coolant inlet)
• Oil warning ind
• Temperature switch (rear right side of engine compartment, in e-box)

DEFOGGERS

Defogger Wiring Diagram for BMW 525i 1991

List of elements for Defogger Wiring Diagram for BMW 525i 1991:

• Antenna amplifier (in upper left "c" pillar)
• Diversity (in upper left "c" pillar)
• Fuse f46 30a
• G303 (below right rear seat)
• Hifi amplifier
• Hot at all times
• Integrated climate regulation control module (ihkr/f3) (left side of right footwell)
• Nca
• Radio
• Rear defogger i
• Rear defogger relay (in rear power distribution box)
• Rear defogger/ antenna
• Rear power distribution box (below left side of rear seat)
• Starting/charging system
• Suppression filter (in upper right "c" pillar)
• W/ 3- antenna- diversity
• W/ 3-antenna- diversity
• W/o 3- antenna- diversity
• W/o 3-antenna- diversity

HORN

Horn Wiring Diagram for BMW 525i 1991

List of elements for Horn Wiring Diagram for BMW 525i 1991:

• Acc
• Front power distribution box (rear left side of engine compartment)
• Fuse f9 15a
• G100 (front left of engine compartment)
• G101 (front right of engine compartment)
• Horn relay (front power disribution box)
• Horn switch
• Horn/telephone jumper plug (front power distribution box)
• Hot at all times
• Ignition switch
• Left horn
• Off
• Red
• Right horn
• Run
• Slip ring
• Start
• Unloader relay r (front power distribution box)

MEMORY SYSTEMS

Memory Mirrors Wiring Diagram for BMW 525i 1991

List of elements for Memory Mirrors Wiring Diagram for BMW 525i 1991:

• (driver's seat, seat control switch)
• (driver's thigh support switch)
• (memory seats)
• Adjust hor
• Adjust l/r
• Adjust vert
• Anti- theft system
• Automatic transmission range switch (front of gearshift selector)
• Back back
• Back fwd
• Backup light switch (below center console)
• Computer data lines system
• Cushion
• Data
• Down
• Driver's
• Driver's door jamb switch
• Driver's side memory mirror
• Front power distribution box (rear left side of engine compartment)
• Funct illum
• Fuse f12 15a
• Fuse f16 30a
• Fuse f18 15a
• G202 (left side of i/p)
• G303 (below right rear seat)
• Gnd
• Ground
• Head dn
• Head up
• Headrest
• Height dn
• Height up
• Hor/vert
• Hot in accy, run and start
• Hot in run and start
• Illumination
• L/r and u/d
• Left
• Lf door
• Mem switch
• Mem1
• Mem2
• Mem3
• Memory mirrors control switch
• Memory seat/ mirrors switch
• Memory systems
• Memory systems (driver's seat, seat control switch)
• Nca
• Passenger's
• Passenger's side memory mirror
• Position
• Potentiomtr
• Power
• Program
• Pwr/gnd
• Rear height
• Reverse
• Right
• Seat back
• Seat fwd
• Seat height
• Seat/mirror memory control module (underside of left front seat)
• Select
• Thigh back
• Thigh fwd
• Thigh spprt
• Tilt dn
• Tilt up
• W/ egs
• W/o egs
• X18181
• X601
• X602
• X648
• X649
• X653
• X654
• X655
• X656
• X657

Memory Seat Wiring Diagram for BMW 525i 1991

List of elements for Memory Seat Wiring Diagram for BMW 525i 1991:

• (lower left front seatback)
• Anti- theft system
• Automatic transmission range selector (front of gearshift selector)
• Back
• Back back
• Back fwd
• Backup light switch (below center console)
• Computer data lines system
• Cushion
• Data
• Down
• Driver's door jamb switch
• Driver's seat cushion tilt motor (under left front seat)
• Driver's seat, seat control switch
• Driver's thigh support motor (under left front seat)
• Driver's thigh support switch
• Front
• Front power distribution box (rear left side of engine compartment)
• Funct light
• Fuse f12 15a
• Fuse f16 30a
• Fuse f18 15a
• Fwd
• G202 (left side of i/p)
• G303 (below right rear seat)
• Ground
• Head dn
• Head up
• Headrest
• Headrest motor (under driver's seat)
• Headrest potentiometer (lower left front seatback)
• Height
• Height dn
• Height up
• Hot in accy, run and start
• Hot in run and start
• Illumination
• Interior lights system
• Lf door
• Mem switch
• Mem1
• Mem2
• Mem3
• Memory seat/ mirrors switch
• Nca
• Position
• Power
• Program
• Pwr/gnd
• Rear height
• Reverse
• Rwd
• Seat back
• Seat cushion rear height potentiometer (lower left front seatback)
• Seat fwd
• Seat height
• Seat height motor (under driver's seat)
• Seat height potentiometer
• Seat motor (under driver's seat)
• Seat movement potentiometer (lower left front seatback)
• Seat/mirror memory control module (underside of left front seat)
• Seatback
• Seatback motor (under driver's seat)
• Seatback potentiometer (lower left front seatback)
• Thigh back
• Thigh fwd
• Thigh spprt
• Thigh support potentiometer (lower left front seatback)
• Tilt dn
• Tilt up
• W/ egs
• W/o egs
• X18181
• X602
• X648
• X649
• X653
• X654
• X655
• X656
• X657

POWER DOOR LOCKS

Power Door Lock Wiring Diagram for BMW 525i 1991

List of elements for Power Door Lock Wiring Diagram for BMW 525i 1991:

• Arrest central
• Central arrest
• Drivers door lock motor
• Drivers door lock switch
• Electric power protection relay (rear power distribution box)
• Fuse f30 7.5a
• Fuse f31 7.5a
• Fuse f47 30a
• G303 (below right rear seat)
• G303 (below right side of rear seat)
• Gas filler lock motor
• Hot at all times
• Inertia switch (below center of rear seat)
• Interior lights system
• Left rear door lock motor
• Not used
• Off
• Passengers door lock motor
• Passengers door lock switch
• Power windows system
• Rear power distribution box (below left rear seat)
• Relay module (rear power distribution box)
• Right rear door lock motor
• Trunk lock motor
• Unlk
• X253
• X254
• X255
• X332

POWER MIRRORS

Power Mirror Wiring Diagram for BMW 525i 1991

List of elements for Power Mirror Wiring Diagram for BMW 525i 1991:

• Down
• Driver's
• Driver's side mirror
• Front power distribution box (rear left side of engine compartment)
• Fuse f12 15a
• G202 (left side of i/p)
• G303 (below right rear seat)
• Hot in run and start
• Left
• Mirror control switch
• Nca
• Passenger's
• Passenger's side mirror
• Right

POWER SEATS

Heated Seats Wiring Diagram for BMW 525i 1991

List of elements for Heated Seats Wiring Diagram for BMW 525i 1991:

• (w/memory)
• Driver's seat heater (underside of left front seat)
• Driver's seat, seat heater switch
• Driver's seatback heater (in lower left front seatback)
• Front power distribution box (rear left side of engine compartment)
• Fuse f16 30a
• G202 (left side of i/p)
• G303 (below right rear seat)
• Hot in run and start
• Interior lights system
• Max
• Memory systems (w/memory seats)
• Min
• Passenger's seat heater (underside of left front seat)
• Passenger's seat, seat heater switch
• Passenger's seatback heater (in lower right front seatback)
• Test

Power Seats Wiring Diagram for BMW 525i 1991

List of elements for Power Seats Wiring Diagram for BMW 525i 1991:

• Back
• Cushion tilt
• Driver's headrest motor (in upper left front seatback)
• Driver's seat cushion tilt motor (under left front seat)
• Driver's seat height motor (under left front seat)
• Driver's seat movement motor (under left front seat)
• Driver's seat, seat control switch
• Driver's seatback recliner motor (under left front seat)
• Driver's thigh support motor (under left front seat)
• Driver's thigh support switch (w/sport seats only) (1991/1992 only)
• Front
• Fuse f42 30a
• Fuse f43 30a
• Fwd
• G303 (below right rear seat)
• G304 (below left rear seat)
• Headrest
• Height
• Hot at all times
• Interior lights system
• Nca
• Passenger's headrest motor (in upper right front seatback)
• Passenger's seat cushion tilt motor (under right front seat)
• Passenger's seat height motor (under right front seat)
• Passenger's seat movement motor (under right front seat)
• Passenger's seat, seat control switch
• Passenger's seatback recliner motor (under right front seat)
• Passenger's thigh support motor (under right front seat)
• Passenger's thigh support switch (w/sport seats only) (1991/1992 only)
• Position
• Rear power distribution box (below left side of rear seat)
• Rwd
• Seatback

POWER WINDOWS

Power Window Wiring Diagram for BMW 525i 1991

List of elements for Power Window Wiring Diagram for BMW 525i 1991:

• (below g303
• (below right g303
• (left side g202
• (not used)
• Child safety lock switch
• Close
• Close left rear window signal
• Close off
• Close pass. window signal
• Close right rear window signal
• Close right rear window signal close left rear window signal driver's window motor control
• Data line
• Driver's & left rear window control/ sunroof motor control
• Driver's window limit switch
• Driver's window motor
• Driver's window open signal
• Driver's window switch
• Electric power control protection relay control
• Electric power protection relay (rear power distribution box)
• Front console window switch assembly
• Front power distribution box (left rear side of engine comp.)
• Fuse f17 7.5a
• Fuse f30 7.5a
• Fuse f47 30a
• General module (left side of
• Hot at all times
• Hot in run and start
• Left rear window
• Left rear window motor
• Left rear window motor control
• Left rear window open signal
• Left rear window switch
• Limit switch
• Of i/p)
• Off
• Open
• Open driver's window signal close driver's window signal right rear window open signal
• Open left rear window signal open passenger's window signal
• Open right rear window signal
• Pass. window open signal
• Passenger's and right rear window motor control
• Passenger's window limit switch
• Passenger's window motor
• Passenger's window motor control
• Passenger's window switch
• Power for electronics
• Power input
• Power tops system
• Rear power distribution box (below left side of rear seat)
• Rear seat)
• Red
• Red/
• Relay module (left side of rear seat)
• Right rear seat)
• Right rear window limit switch
• Right rear window motor
• Right rear window switch
• X253
• X254
• X255
• X258
• X259
• X316
• X317
• X332

RADIO

Radio Wiring Diagrams for BMW 525i 1991

List of elements for Radio Wiring Diagrams for BMW 525i 1991:

• 10a
• 6.3a
• Antenna amplifier
• Body computer system
• Cd changer
• Cellular telephone
• Coax cable
• Front power distribution box (rear left side of engine compartment)
• Fuse f18 15a
• Fuse f36 30a
• G304 (below left rear seat)
• Hifi amplifier
• Hot at all times
• Hot in accy, run and start
• Instrument cluster system
• Interior lights system
• Left front high range speaker
• Left front low range speaker
• Left front midrange speaker
• Left rear high range speaker
• Left rear low range speaker
• Nca
• Power input
• Radio
• Rear power distribution box (below left side of rear seat)
• Right front high range speaker
• Right front low range speaker
• Right front midrange speaker
• Right rear high range speaker
• Right rear low range speaker
• X18126
• X605
• X606
• X8075

STARTING/CHARGING

Charging Wiring Diagram for BMW 525i 1991

List of elements for Charging Wiring Diagram for BMW 525i 1991:

• Alternator
• B+ junction point (rear left side of engine compartment)
• Battery
• Charge ind
• Data link connector (rear left side of engine compartment)
• Front power distribution box (rear left side of engine compartment)
• Fuse f17 7.5a
• Fuse f28 15a
• G101 (right side of engine compartment)
• Hot in run and start
• Instrument cluster
• Integrated climate regulation control module
• Rear defogger relay (below left side of rear seat)
• Rear seat heating relay (1991 only) (below left side of rear seat)
• Red
• Slip control module (rear right side of engine compartment)
• Starter
• Uncoupling diode (m5) (left rear side of engine compartment)
• Unloader relay (rear left side of engine compartment)
• W/ asc
• W/o asc

Starting Wiring Diagram for BMW 525i 1991

List of elements for Starting Wiring Diagram for BMW 525i 1991:

• Acc
• Battery
• Data link connector (rear left side of engine compartment)
• Ex m5
• Front power distribution box (rear left side of engine compartment)
• Fuse f17 7.5a
• G101 (right side of engine compartment)
• General module
• Generator
• Hot at all times
• Hot in run and start
• Ignition switch
• Integrated climate regulation control module
• Jumper plug (rear left side of engine compartment)
• Lock
• On-board computer
• Red
• Run
• Start
• Starter
• Starter relay (rear left side of eng compartment)
• W/ egs
• W/o egs
• W/o egs & m5

TRANSMISSION

Transmission Wiring Diagram, 4 Speed with Overdrive for BMW 525i 1991

List of elements for Transmission Wiring Diagram, 4 Speed with Overdrive for BMW 525i 1991:

• 1991 only
• Automatic transmission range switch
• B+ junction point
• Band solenoid
• Brake light switch
• Check control module
• Computer data lines system
• Electronic transmission engine speed sensor
• Engine controls system
• Front power distribution box
• Fuse f1 15a
• Fuse f17 7.5a
• Ground
• Hot at all times
• Hot in accy, run and start
• Hot in run and start
• Hydraulic pressure regulator
• Instrument cluster
• Interior lights system
• Nca
• Oil temperature sensor
• Program switch
• Red
• Shift lock solenoid
• Solenoid valve 1
• Solenoid valve 2
• Torque converter clutch sol valve
• Transmission control module (egs)
• Transmission kickdown switch
• Transmission valve unit
• Transparent

WIPER/WASHER

Wiper/Washer Wiring Diagram for BMW 525i 1991

List of elements for Wiper/Washer Wiring Diagram for BMW 525i 1991:

• Fast
• Front power distribution box (left rear of engine compartment)
• Fuse f15 7.5a
• Fuse f44 30a
• G202 (behind left side of dash)
• G303 (below right side of rear seat)
• G304 (below left side of rear seat)
• General module (below left side of rear seat)
• Hot at all times
• Hot in accy, run and start
• Instrument cluster
• Intensive washer pump (ex usa)
• Not used
• Off
• Pause
• Rear power distribution box (below left side of rear seat)
• Relay module (below left side of rear seat)
• Single
• Slow
• Vss output
• Washer pump
• Washer pump relay (left rear of engine compartment) (ex usa)
• Wiper motor
• Wiper relay (below left side of rear seat)
• Wiper/ washer switch
• X253
• X255