All Wiring Diagrams for Porsche 928 S4 1990

COOLING FAN

Cooling Fan Wiring Diagram for Porsche 928 S4 1990

List of elements for Cooling Fan Wiring Diagram for Porsche 928 S4 1990:

• (1987-1989) (1990-1992)
• Air conditioning system
• Anti-theft system
• Central electric (in passenger's footwell on safety wall)
• Coolant fan & flap unit (on passenger's side sill)
• Coolant fan amplifier (in engine compartment on front right end panel)
• Cooling fan 1
• Cooling fan 2
• Cooling water thermoswitch (right rear of engine compartment, on expansion tank)
• Freon pressure switch (in cooling hose, before expansion tank)
• Fuse 28 fuse 29 30a
• Fuse 29 fuse 30 30a
• Fuse 3 fuse 36 5a
• G109 (in engine compartment, near air conditioning condenser)
• Hot at all times
• Hot in acc or run
• Intake pipe temperature switch
• N23 d22
• Q14 c15
• Q21 b22
• Q22 b23
• Q25 d24
• Red
• S25 s22
• Torque converter oil temperature switch

DEFOGGERS

Defogger Wiring Diagram for Porsche 928 S4 1990

List of elements for Defogger Wiring Diagram for Porsche 928 S4 1990:

• (not used)
• (right side of safety wall above central electric) g201
• (right side of safety- wall, above central electric) g201
• 85a
• 86a
• 86b
• 87a
• Acc
• C12
• Central electric) g201
• Central electric (in passenger's footwell on safety wall)
• Driver's side mirror
• F15
• F21
• F22
• Fresh air blower relay (1990 only)
• Fuse 25a
• G204 (lower left side of steering console)
• G407 (center of luggage compartment, under spare cover)
• Hazard light switch
• Hot at all times
• Ignition switch
• Intensive cleaning switch
• Interior lights system
• Nca
• Off
• Passenger's side mirror
• Q13
• Q15
• Q24
• Rear window defogger
• Rear window defogger relay
• Rear window defogger switch
• Red
• Run
• S21
• S23
• Start
• Starter
• Vs terminal
• W/memory mirrors
• W/o memory mirrors

HORN

Horn Wiring Diagram for Porsche 928 S4 1990

List of elements for Horn Wiring Diagram for Porsche 928 S4 1990:

• (in engine compartment near air conditioning condenser) g101
• Central electric (in passenger's footwell on safety wall)
• Contact unit
• D13
• Fuse 24 7.5a
• Hot at all times
• N15
• Sliding contact unit
• Steering wheel (w/horn contact)
• Two- tone horns relay
• Two-tone horn
• Wipe/ wash switch (w/horn contact)

MEMORY SYSTEMS

Driver's Memory Seat Wiring Diagram (1 of 2) for Porsche 928 S4 1990

List of elements for Driver's Memory Seat Wiring Diagram (1 of 2) for Porsche 928 S4 1990:

• (1987) (1988-1989) (1990)
• (1987-1989) (1990)
• (1987-1989) h21 p13 (1990)
• (1988-1989) (1990)
• 4-way seat switch 2
• 4-way seat switch 3
• Central electric (behind panel, in passenger's footwell)
• Driver's seat memory control unit (in driver's seat)
• Fuse 21 fuse 20 fuse 22 30a
• Fuse 7 20a (1987)
• Fuse 8 fuse 44 15a
• G103 (right of engine compartment)
• G11 k25
• Hot at all times
• Hot in run or start
• Left memory switch
• Red

Driver's Memory Seat Wiring Diagram (2 of 2) for Porsche 928 S4 1990

List of elements for Driver's Memory Seat Wiring Diagram (2 of 2) for Porsche 928 S4 1990:

• 1989-1990 1987-1988
• 4-way seat switch 1
• Backrest heating element
• Backrest motor (under driver seat)
• G207 (steering console)
• Height front control motor (under driver seat)
• Height rear control motor (under driver seat)
• Longitudinal control motor (under driver seat)
• Lumbar curve control motor (under driver seat)
• Lumbar support height motor (under driver seat)
• Mirror memory control unit (in driver's footwell on side)
• Red
• Relay unit 1
• Relay unit 2
• Seat cushion heating element
• Seat heater switch
• Side heating element

Memory Mirrors Wiring Diagram for Porsche 928 S4 1990

List of elements for Memory Mirrors Wiring Diagram for Porsche 928 S4 1990:

• (not used)
• 1987-1989
• Central electric (in passenger's footwell on safety wall)
• Defogger system
• Driver's side mirror
• E12
• F12
• F22
• Fuse 24 fuse 25 7.5a
• G123 (right side of safety wall)
• Hot at all times
• Left memory switch
• Memory systems (seats)
• Mirror changeover switch
• Mirror control switch
• Mirror memory control unit (in driver's footwell on side)
• Passenger's side mirror
• Red

Passenger's Memory Seat Wiring Diagram (1 of 2) for Porsche 928 S4 1990

List of elements for Passenger's Memory Seat Wiring Diagram (1 of 2) for Porsche 928 S4 1990:

• (1987) (1988-1989) (1990)
• (1987-1989) (1990)
• (1987-1989) h21 p13 (1990)
• (1988-1989) (1990)
• 4-way seat switch 2
• 4-way seat switch 3
• Button panel
• Central electric (behind panel, in passenger's footwell)
• Fuse 20 fuse 21 fuse 23 30a
• Fuse 7 20a (1987)
• Fuse 8 fuse 44 15a
• G12 m12
• Hot at all times
• Hot in run or start
• Passenger's seat memory control unit (in passenger's seat)
• Red
• Right memory switch

Passenger's Memory Seat Wiring Diagram (2 of 2) for Porsche 928 S4 1990

List of elements for Passenger's Memory Seat Wiring Diagram (2 of 2) for Porsche 928 S4 1990:

• 1987-1988
• 1989-1990
• 4-way seat switch 1
• Backrest heating element
• Backrest motor (under passenger seat)
• G123 (right of safety wall)
• Height front control motor (under passenger seat)
• Height rear control motor (under passenger seat)
• Longitudinal control motor (under passenger seat)
• Lumbar curve control motor (under passenger seat)
• Lumbar support height motor (under passenger seat)
• Red
• Relay unit 1
• Relay unit 2
• Seat cushion heating element
• Seat heater switch
• Side heating element

POWER DOOR LOCKS

Power Door Lock Wiring Diagram for Porsche 928 S4 1990

List of elements for Power Door Lock Wiring Diagram for Porsche 928 S4 1990:

• (1989) (1990)
• Anti-theft system
• B13 q13
• Central electric (in passenger's footwell on safety wall)
• Central lock button
• Central locks control unit
• Close
• Driver door lock motor
• F12 k14
• Fuse 15a (1990)
• Fuse 5a (1989)
• G123 (above central electric)
• Hot at all times
• Instrument cluster system
• Interior lights system
• Left lock cylinder
• Nca
• Open
• Passenger door lock motor
• Right lock cylinder

POWER MIRRORS

Power Mirror Wiring Diagram for Porsche 928 S4 1990

List of elements for Power Mirror Wiring Diagram for Porsche 928 S4 1990:

• (1990)
• Central electric (in passenger's footwell on safety wall)
• Change- over switch
• Defogger system
• Driver's side mirror
• E22
• F14 p14
• Fuse 12 7.5a
• G201 (behind right side of i/p, above central electric)
• G204 (lower left side of i/p, on steering column)
• Hot in acc, run or start
• Mirror switch
• Passenger's side mirror
• Rear window defogger relay
• T12
• Vs term

POWER SEATS

Comfort Seats Wiring Diagram for Porsche 928 S4 1990

List of elements for Comfort Seats Wiring Diagram for Porsche 928 S4 1990:

• (1989) (1989)
• (1989) (1990)
• (1989) h21 p13 (1990)
• (1990) (1990)
• (right seat) (left seat)
• 4-way seat switch 1
• 4-way seat switch 2
• 4-way seat switch 3
• Backrest heating element
• Central electric (behind panel, in passenger's footwell)
• Comfort seat
• Front seat cushion height control
• Fuse 21 fuse 20 30a
• Fuse 23 fuse 22 30a
• Fuse 8 fuse 44 15a
• G11 k25
• G12 m12
• G123 (right side of safety wall)
• Hot at all times
• Hot in run or start
• Lumbar curve control
• Lumbar height control
• Rear seat cushion height control
• Red
• Seat back forward control
• Seat backrest control
• Seat cushion heating element
• Seat heater switch
• Side heating element
• Solid state
• Time delay relay

Sport Seats Wiring Diagram for Porsche 928 S4 1990

List of elements for Sport Seats Wiring Diagram for Porsche 928 S4 1990:

• (1989)(right seat) (1989)(left seat)
• (right seat)(1990) (left seat)(1990)
• 2-way seat switch 1
• 2-way seat switch 2
• Backrest heating element
• Central electric (behind panel, in passenger's footwell)
• Front seat cushion height control
• Fuse 21 fuse 20 30a
• Fuse 23 fuse 22 30a
• Fuse 44 15a (1990)
• Fuse 8 15a (1989)
• G11
• G116 (left side of safety wall)
• G12 m12 k25
• H21
• Hot at all times
• Hot run or start
• Rear seat cushion height control
• Red
• Seat cushion heating element
• Seat heater switch
• Side heating element
• Solid state
• Sport seat
• Time delay relay

POWER WINDOWS

Power Window Wiring Diagram for Porsche 928 S4 1990

List of elements for Power Window Wiring Diagram for Porsche 928 S4 1990:

• Alarm system additional control unit (in center console below radio)
• Central electric (in passenger's footwell on safety wall)
• Door locks system
• Driver power window push button switch
• Driver's side power window regulator motor
• Fuse 30a
• G201 (right side of i/p, above central electric)
• Hot at all times
• Hot in run or start
• Inside lights relay
• K24
• L12
• Left door contact
• Passenger power window push button switch
• Passenger's side power window regulator motor
• Power tops system (sun roof)
• Power window regulator/ sun roof control unit
• Q13
• Red
• Right door contact
• Timing relay (in center console below radio)

RADIO

Radio Wiring Diagrams for Porsche 928 S4 1990

List of elements for Radio Wiring Diagrams for Porsche 928 S4 1990:

• 1989-90
• 1990 and after
• Antenna
• Antenna amplifier (right side footwell)
• Anti-theft system
• Booster (under the cover, on passenger's side sill)
• Central electric (below right side of i/p)
• Deep range speaker
• E24
• F24
• Front left speaker assembly
• Front right speaker assembly
• Fuse 15a
• G123 (right side of safety wall)
• High range speaker
• Hot at all times
• Hot in accy, run or start
• Left
• Left door separating filter
• Middle range speaker
• Nca
• Radio
• Rear left speaker assembly
• Rear right speaker assembly
• Red
• Right
• Right door separating filter
• Suppressor (in center console)

STARTING/CHARGING

Charging Wiring Diagram for Porsche 928 S4 1990

List of elements for Charging Wiring Diagram for Porsche 928 S4 1990:

• Alternator
• Anti-lock brake system
• Anti-theft system
• Battery
• Central electric (behind panel in passenger's footwell)
• E21
• G11
• G404 (under tool kit cover)
• Instrument cluster
• Nca
• Power distribution system
• Red
• Starter
• Tire pressure control unit

Starting Wiring Diagram for Porsche 928 S4 1990

List of elements for Starting Wiring Diagram for Porsche 928 S4 1990:

• (1986-89)
• (1986-89) (1990-92)
• (1990-92)
• 15a
• A23
• Acc
• Alternator
• Battery
• C12
• Central electric (behind panel panel in passenger's footwell)
• G404 (under tool kit cover)
• G408 (under spare wheel cover)
• H21
• Hot at all times
• Ignition switch
• Inhibitor switch
• Nca
• Off
• Power distribution system
• Q13
• Red
• Relay 14 relay 5 starter
• Start
• Starter
• U23
• Wire connector

TRUNK, TAILGATE, FUEL DOOR

Trunk, Tailgate, Fuel Door Wiring Diagrams for Porsche 928 S4 1990

List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Porsche 928 S4 1990:

• (1985-86 & 1990)
• (1985-86)
• (1990-92)
• (1991-92)
• (under spare wheel cover) (1985-86 & 1990) g404
• Central electric (in passengers footwell on firewall)
• E13
• F13
• Fuse 24 5a (1985-86)
• Fuse 25 7.5a (1990-92)
• Fuse 26 1a
• Hot at all times
• Interior lights system
• J22
• Left tailgate unlocking switch
• O11
• R11
• Red
• Right tailgate unlocking switch
• S11
• T14
• Tailgate door switch
• Tailgate unlocking drive

WIPER/WASHER

Front Wiper/Washer & Headlight Washer Wiring Diagram for Porsche 928 S4 1990

List of elements for Front Wiper/Washer & Headlight Washer Wiring Diagram for Porsche 928 S4 1990:

• (above central electric) g202
• (lower left side of steering console) g204
• 31a
• 53b
• 53m
• 53s
• 53a
• 53b
• 53c
• 53e
• 53i
• Additional cleaning fluid pump
• Additional cleaning fluid pump relay
• C11
• C24
• Central electric (in passenger's footwell on safety wall)
• Fuse 25a
• Fuse 5a
• H15
• Headlight cleaners relay
• Headlight washing fluid pump
• Headlights system
• Hot at all times
• Hot in acc or run
• Hot in run or start
• Iii
• Intensive cleaning switch
• Inter- mittent wiper control relay
• Interior lights system
• Interval wiping
• J13
• J14
• J15
• J24
• J25
• K15
• L22
• L24
• Left heated spray jet
• Nca
• O23
• Off
• P23
• Potentiometer
• Rear window wiper switch
• Red
• Right heated spray jet
• Solid state
• Tip sw
• Washing
• Windshield washing fluid pump
• Windshield wiper motor
• Wipe/wash switch

Rear Wiper Wiring Diagram for Porsche 928 S4 1990

List of elements for Rear Wiper Wiring Diagram for Porsche 928 S4 1990:

• 53a
• Central electric (in passenger's footwell on safety wall)
• Fuse 15a
• Fuse 5a
• Fuse 7.5a
• G407 (under spare wheel cover)
• Hot at all times
• Hot in run or start
• Intensive cleaning switch
• Rear window wiper motor
• Rear window wiper relay
• Rear window wiper switch
• Red
• Solid state
• T15
• U23