1979 Porsche 928 (USA Model) Wiring Diagrams Manual

Wiring 97 Current Flow Diagram Type 928 USA Model 79 Symbols and Explanation Current Flow Diagram 97-27

Current Flow Diagram Type 928 USA Model 79 l Symbols and Explanation Wiring 97 T l--- t SWITCH, OPEN T k-- 1 SWITCH. CLOSED 4 C- t d-l SEQUENCE SWITCH Q RESISTOR, HEATINQ ELEMENT FUSE BULB POTENTIOMETER RESISTOR SENDER UNIT INDUCTANCE, COIL HORN LOUDSPEAKER ANTENNA EQUIPMENT BORDER LINE SOLID-STATE CIRCUIT SPARK GAP DIODE BAlTERY CELL WIRE CONNECTION, PERMANENT WIRE CONNECTION, DETACHABLE SHIELDED WIRE FUSE (WHITE: 6A. FUSE/REL&Y BOARD RED: 16A, BLUE: 25A) WIRE CONNECTICZBN ON FUSE/RELAY BO-RD c- Q l-r t T a t l--- T t o-- T El4 Ft{ ;, 4 El-4 . 0 M 0 G 0 / --- + j+ -- T x+ --_ a TIP SWITCH 9” SWITCH (TIP SWITCH), MANUALLY OPERATED SWITCH (TIP SWITCH), MECHANICALLY OPERATED, E.G. LIMIT SWITCH + TEMPERATURE SWITCH PRESSURE SWITCH TEMPERATURE SWITCH (THERMAL OVERLOAD PROTECTION) 0.75 I T7: -T r’-‘-‘- I I I I i-.-.-j 19 = ‘9 -I WIRE CONNECTOR T7t (E. G. SEVEN-POLE, TE RMINAL 2) WIRE CROSS SECTION (E. G. 0,75 mrm’) or5 FLOAT SWITCH r‘---‘-l MOTOR GENERATOR L>i;r,l COLOUl%Z OF WIRE METER, INDICATOR Y (E.G. BLACK/BLUE) NO ACTUAL WIRE, BUT INTERNAL I-- 7 CONNECTION OR CONNECTION L j BETWEEN EQUIPMENT HOUSING AND GROUND t SOLENOID CURRENT TRACK 1 , GROUWD(BOD’f) NUMBER 14 15 RELAY SOLENOID VALVE Printed in Germany - II, 1978 Current Flow Diagram 97-27

Wiring 97 Current Flow Diagram Type 928 USA Model 79 Index Current Flow Diagram 97-29

Current Flow Diagram Type 928 USA Model 79 Wiring 97 l Index l Current- Part track VII 7 - AIR CONDITIONER SWITCH IX 19 -- ANTENNA X - 11 - BACKREST ADJUSTMENT, MOTOR X - 11 - BACKREST ADJUSTMENT, SWITCH X - 9- BACKREST LIMIT SWITCH IV - 13 - BACK-UP LIGHT, LEFT IV 15- BACK-UP LIGHT, RIGHT IV - 6- BACK-UP LIGHT, SWITCH I - 7- BAlTERY VIII --’ 14- BRAKE FLUID LEVEL SWITCH VIII - 26- BRAKE FLUID LEVEL WARNING LIGHT IV - 5- BRAKE LIGHT. LEFT IV - 12- BRAKE LIGHT, RIGHT VI - 6- BRAKE LIGHT SWITCH VI - 24- BRAKE PAD CONTACT, FRONT, LEFT VI - 22- BRAKE PAD CONTACT, FRONT, RIGHT VI - 20- BRAKE PAD CONTACT, REAR, LEFT VI - 20 - BRAKE PAD CONTACT, REAR, RIGHT VIII - 31 - BRAKE PADS WARNING LIGHT VIII - 32- BRAKE WARNING LIGHT VIII - 25 - CENTRAL WARNING LIGHT VIII - 23 - CENTRAL WARNING LIGHT - RESET BUTTON VIII - lo- CENTRAL WARNING UNIT IX - S- CIGARETTE LIGHTER, FRONT IX - 6- CIGARElTE LIGHTER, REAR VII - 17- CLEANING WATER LEVEL SENDER UNIT VIII - 16- CLEANING WATER LEVEL WARNING LIGHT IX - 2- CLOCK IX - 13- CLUTCH PEDAL SWITCH (TEMPOSTAT) Ill - lo- CONCEALING HEADLIGHT MOTOR Ill - 13- CONCEALING HEADLIGHT RELAY VII - 16- COOLANT LEVEL SENDER UNIT VIII - 12 - COOLANT LEVEL WARNING LIGHT VIII - 13 -- COOLANT TEMPERATURE INDICATOR VII - 12- COOLANT TEMPERATURE SENDER UNIT VIII - 24 - COOLANT TEMPERATURE WARNING LIGHT VII - 11- COOLING FAN MOTOR, AC VII - 11 - COOLING FAN RELAY, AC VII - 2- DEFROSTER RELAY II - 13- DIMMER/HEAD LIGHT FLASHER SWITCH I - 15 - DISTRIBUTOR V - 22- DOOR SWITCH, LEFT V - 24- DOOR SWITCH. RIGHT VII -- 6 - ELECTROMAGNETIC CLUTCH FOR AC Ill 20 -- EMERGENCY FLASHER SWITCH Ill - 9- ENGINE COMPARTMENT LIGHT II - 21 - FOG LIGHT, LEFT Ill -- 1 - FOG LIGHT RELAY II - 24 - FOG LIGHT. RIGHT Ill - 1 - FOG LIGHT SWITCH VII 6 - FRESH AIR BLOWER MOTOR VII - 3 - FRESH AIR BLOWER RELAY VII - 4 - FRESH AIR BLOWER. RESISTOR UNIT VII - 5 --- FRESH AIR BLOWER.SWITCH VIII - 15 -- FUEL GAUGE I - 20 - FUEL PUMP I - 20 -- FUEL PUMP RELAY VII --- 19 - FUEL SENDER UNIT Current- Part track FUSES Ill - l- 1 II -13- 2 Ill - 7 -- 3 Ill - 2--- 4 1x--5- 5 IV - 17- 6 v -4- 7 XI - 15- 6 IV - 15- 9 IV - 5- 10 IX - 2- 11 VIII - 26- 12 13 (fee) x - 4-14 v - 8-15 VII - 11 -- 16 VII - 3- 17 IX --- 25- FUSE (RADIO) I - 6 - GENERATOR Current- Part track FUSES V -16-16 Ill - 13 19 IV -26-20 VI -- 9- 21 I -20-22 V - 17- 23 II - 15- 24 II - 17- 25 II -16 - 26 II - 18 -- 27 II - 20- 28 II - 23- 29 Ill - 18 ---. 30 Ill -. 19- 31 IV - 1 - 32 IV --. s- 33 Ill - 6-- 34 VIII -37 - GENERATOR CHARGE INDICATOR LIGHT V - 26 - GLOVE COMPARTMENT LIGHT V -. 26 - GLOVE COMPARTMENT LIGHT SWITCH Ill - 24 - HAZARD/TURN SIGNAL FLASHER Ill - 12 - HEADLIGHT CONTROL RELAY II - 14 - HEADLIGHT DIMMER RELAY II - 15 -- HEADLIGHT, LEFT Ill - 10 - HEADLIGHT RELAY II -- 17 - HEADLIGHT, RIGHT Ill - 16 .- HEADLIGHT SAFETY RELAY IV -26 - HEADLIGHT WASHER PUMP IV - 25 -- HEADLIGHT WASHER RELAY VII - 1 - HEATER CONTROL ASSEMBLY IX - 1 - HEATER CONTROL ASSEMBLY LIGHT VIII --. 39 .---- HIGH BEAM INDICATOR LIGHT IX - 16 - HORN IX - 16 - HORN CONTACT IX - 16 - HORN RELAY I - 15.- IGNITION COIL II - 7- IGNITION/STARTER SWITCH VIII 6- INSTRUMENT CLUSTER ILLUMINATION IX 2 -- INSTRUMENT CLUSTER ILLUMINATION, POTENTIOMETER V - 2- INTENSIVE CLEANER PUMP V - 2---- INTENSIVE CLEANER PUMP RELAY V -- 3- INTENSIVE CLEANER PUMP SWITCH V - 20- INTERIOR LIGHT, FRONT V - 17 INTERIOR LIGHT, REAR IV 24 .- INTERVAL WIPING. POTENTIOMETER IV - 20- INTERVAL WIPING, RELAY V 30 KEY WARNING BUZZER CONTACT IV - 6- LAMP CONTROL UNIT Ill - 7- LICENCE PLATE LIGHT II 8 - LIGHT SWITCH X - 3 - LONG1 IUDINAL SEAT ADJUSTMENT, MOTOR X 5 - LONGITUDINAL SEAT ADJUSTMENT, SWITCH IX - 21- LOUDSPEAKER, FRONT, LEFT IX 24 -- LOUDSPEAKER, FRONT, RIGHT IX - 20- LOUDSPEAKER, REAR, LEFT IX - 26- LOUDSPEAKER, REAR. RIGHT VIII--- 14- LOW FUEL WARNING LIGHT VII -- 6- LOW PRESSURE SWITCH, AC V - 19- MAKE-UP MIRROR ILLUMINATION VIII- 20- MILEAGE RESET, SOLENOID VIII- 20 -- MILEAGE RESET SWITCH VIII- 36- OIL LEVEL INDICATOR LIGHT VII - 14.- OIL LEVEL SWITCH VIII - 27- OIL PRESSURE INDICATOR VIII- 33- OIL PRESSURE INDICATOR LIGHT VII 15 -- OIL PRESSURE SENDER UNIT VI - 3- OUTSIDE MIRROR. LEFT VI - 5- OUTSIDE MIRROR, LEFT, SWITCH Current- Part track VIII lo- PARKING BRAKE CONTACT VIII- 34- PARKING BRAKE INDICATOR LIGHT II - 5- PARKING LIGHT CONTACT VIII - 11 - PARKING LIGHT INDICATOR II - 20- PARKING LIGHT, LEFT II -. 23- PARKING LIGHT, RIGHT VI - 9- POWER WINDOW MOTOR, LEFT VI - 12- POWER WINDOW MOTOR, RIGHT VI -- 9- POWER WINDOW RELAY VI - lo- POWER WINDOW SWITCH. LEFT VI - 13-. POWER WINDOW SWITCH. RIGHT IX - 23- RADIO V - 21 - REAR LID SWITCH IV 4 - REAR LIGHT, LEFT IV .-- 9- REAR LIGHT, RIGHT VIII - 18- REAR LIGHTS WARNING LIGHT V -- 14- REAR WINDOW DEFOGGER V - 14- REAR WINDOW DEFOGGER RELAY V - 11 - REAR WINDOW DEFOGGER SWITCH V -- 7- REAR WINDOW WIPER MOTOR V - 5- REAR WINDOW WIPER SWITCH I - 6- REGULATOR I .. 13- RESISTOR V - 28-- SEAT BELl’ CONTACT V ~- 30- SEAT BELT WARNING LIGHT V 28- SEAT BELT WARNING SYSTEM RELAY X - 9- SEAT RAIL LIMIT SWITCH x 6 -- SEAT RELAY II 19- SIDE MARKER, FRONT LEFT II 22 SIDE MARKER, FRONT RIGHT IV 7 SIDE MARKER, REAR LEFT IV 4 SIDE MARKER, REAR RIGHT VI 18 --- SLIDING ROOF MOTOR VI -- 16-- SLIDING ROOF SWITCH I - 17- SPARK PLUG IX 24- SPEAKER BALANCE VIII - 21- SPEEDOMETER IX .- 14- SPEEDOMETER SENSOR VII - 6- SPEED RELAY, AC I - 8- STARTER I -- - 9 - STARTER BLOCKING RELAY (CARS WITH AUTOMATIC TRANSMISSION ONLY) I - 11 - START VALVE Vlli - 17 - STOP LIGHTS WARNING LIGHT I - 23- SUPPLEMENTARY AIR VALVE VII - 7- SUPPLEMENTARY AIR VALVE, AC IX - 27- SUPPRESSOR (RADIO) VIII -- 26 --- TACHOMETER VII - 10 - TEMPERATURE SWITCH, COOLANT VII - 7 - TEMPERATURE SWITCH, EVAPORATOR VII 9 .- TEMPERATURE SWITCH, REFRIGERANT IX - 11 .- TEMPOSTAT CONTROL UNIT IX -11 TEMPOSTAT (CRUISE CONTROL), SWITCH IX - 13- TEMPOSTAT MOTOR I - 11- THERM0 SWITCH FOR COLD START VALVE I 19 -- TRANSISTOR IGNITION UNIT Ill .-- 14- TURN SIGNAL. FRONT, LEFT IV - 1 - TURN SIGNAL. FRONT, RIGHT VIII -.- 23.- TURN SIGNAL INDICATOR LIGHT VIII -- 22 TURN SIGNAL INDICATOR LIGHT, (TRAILER) Ill - 17- TURN SIGNAL. REAR, LEFT IV 3 TURN SIGNAL. REAR, RIGHT Ill -. 22 -- TURN SIGNAL SWITCH X 8 -- VERTICAL SEAT ADJUSTMENT, MOTOR X - 7- VERTICAL SEAT ADJUSTMENT, SWITCH VIII--- 30 VOLTMETER I 22 WARM UP REGULATOR V 1 WIND SHIELD WASHER PUMP IV - 17 - WIND SHIELD WIPER MOTOR IV -- 2D- WIND SHIELD WIPER SWITCH WIRE CONNECTORS Tl - ONE-POLE A - NEAR TURN SIGNAL LEFT B - NEAR TURN SIGNAL- RIGHT C - NEAR AC-COMPRESSOR D- E- F - NEAR FRESH AIR BLOWER G - NEAR GLOVE COMP-#blTMENT H - NEAR FUSE RELAY %BOARD I - IN LEFT DOOR T2 - TWO-POLE A - BEHIND ACCELERAT-R PEDAL C - BEHIND REAR BUMP- EA D - BEHIND SIDE COVEBING. RIGHT E - NEAR LEFT BACKWWEEL F - NEAR RIGHT BACKWHEEL G - NEAR RIGHT FRONT WHEEL H - NEAR LEFT FRONT MHEEL I - NEAR DRIVER SEAT K - IN DRIVER SEAT L - IN DRIVER SEAT M - IN DRIVER SEAT N - IN DRIVER SEAT 0 - NEAR PASSENGER SEAT P - NEAR DRIVER SEAT Q - NEAR LEFT FOG Llr=HT R - NEAR RIGHT FOG LI GHT U - NEAR LEFT SIDE MARKER V - NEAR RIGHT SIDE M!XlARKER T4 - FOUR-POLE A - IN SPARE WHEEL WELL B - IN CONSOLE, RIGHT C - IN CONSOLE RIGHT D - IN CONSOLE RIGHT G - NEAR LEFT REAR LI GHTS H - NEAR RIGHT REAR LIGHTS T6 - SIX-POLE A - BEHIND SIDE COVERING. RIGHT B - IN REAR LID, RIGHT T7 - SEVEN-POLE A - BEHIND LUGGAGE COMPARTMENT COVERING LEFT B - BEHIND LUGGAGE COMPARTMENT COVERING RIGHT C - IN SPARE WHEEL WELL T8 - EIGHT-POLE A - IN DRIVER SEAT T12 -TWELVE-POLE A - IN DRIVER SEAT, LE FT B - IN FOOT WELL, PAS..SENGEA SIDE T14 - FOURTEEN-POLE IN ENGINE COMPARTME :NT, RIGHT GROUND TERMINALS @ ON FRONT LOCK MEMBER, RIGHT @ AT REAR OF WHEEL ARCH UNDERNEATH RIGHT REAR TRIM PANEL @ ON STEERING CONSOLE @I ON FRONT LOCK MEMBER, LEFT @ ON UPPER MOUNTING FOEa FUSE/RELAY BOARD WIRE COLOURS BK - BLACK GN - GREEN BR - BROWN WT - WHITE YE - YELLOW BL - BLUE RE - RED GR - GREY VI - VIOLET Printed in Germany - II, 1978 Current FlowDiagram 97-29

Wiring 97 Current Flow Diagram Type 928 USA Model 79, Part I POWER SUPPLY, STARTER IGNITION FUEL PUMP Current Flow Diagram 97- 31

Current Flow Diagram Type 928 USA Model 79, Part I 97 Wiring 31 50 FUSE 22 25A 3 STARTER BLOCKING RELAY 8; I , jXrm ’ FUEL PUMP RELAY d T5 pal U6 F-7 RESISTOR t i 1 0,Sn. ii 0.75 lJJ wyo 3 5 z 2 CJl w I 91 81 Ei 31 ‘# 5 i.. In DK 3TF I r- .- - ! i - 1 i f i- -.-_-. _i 9 re e .!====-I II 1.0 a w bl rc re 3s bk t b r- -7 !-zz-i i! : i zt** i aI‘- L-Y-Y-i I % k-5 E 12 3 POWER S”P:LY, ST:RTE; 4” IGN,TI:N;FUE: Pf “, 24 25 26 Cur-rent Flow Diagram 97- 31 Printed in Germany-H,1978

Wiring 97 Current Flow Diagram Type 928 USA Model 79, Part II IGNITION/STARTER SWITCH, LIGHT SWITCH HEADLIGHT, PARKING LIGHT a a Current Flow Diagram 97-33

Current Flow Diagram Type 928 USA Model 79, Part II Wiring 97 14 1; : T , UJ Lo !i IZ L - a co s I 3 2 FUSE 27 8A r I Ml M3 LL I 1.5 “C/hi 12 561: ““-. .“,“““w a- I=== T4n 1.5 Wj’l 1 T2r / , / / , / , I 1,s g” ,” “,S b’ -I I li I T2. 0.b t’ Ii l ‘7 8.5 0.3 WI ye 56a I-----“-” s_qb lc+.,,,, i. -- (/ ,:I’ ,‘j -“A L- A , ---- .-i 30 X .-- I I I I I I I I I I I I I I I I I I I I ‘P Wbk H i -- * -f llJ ---.. _-_ X l”! 0s T4h bk 5 PARKING LIGHT CONTACT ;i ?I .---m-T II 0.5 f CJ z 5 r’” $! c ; L-4 ul c II G is is s i 3E: z B i zlz.. 1s br T4n 5c I I- HEADLIGHl RIGHT 14, -_- ---- --.-,rj~*~.-.-.~,~--.-.-.- .-*___ _ -l IGNITION/STARTER SWITCH 1 23 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 . E IGNITION/STARTER SWITCH, LIGHT SWITCH I tit3D~iGti~, PARKING LIGHT~I Printed in Germany-II, 1978 Current Flow Diagram 97-33

Wiring 97 Current Flow Diagram Type 928 USA Model 79, Part III FOG LIGHT, LICENSE PLATE LIGHT CONCEALED HEADLIGHT FRONT TURN SIGNAL HAZARD FLASHER Current Flow Diagram 97-35

Current flow Diagram Type 928 USA Model 79, Part Ill Wiring 97 x 31 -.Jg4 J -.--!B E8 FUSE 4 aA T I 1 FUSE HAZARDrPURN -,.n- . i-USC J HEADLIGHT CONTROL a* 1 FussEA34 1 yLIGHTk HEADLIGH; RELAY [;+=jj ; q[--f=i ~~ 1 - l or ,j.i -&O$N;$L$ 1 -------,,- F&ii&i-d ::‘i] 09 qwc I, I / , m/re W”bh I I I I I TURN SIGNAL Ix/s IX/l %T “1 96 4= 0: bkh bk/bl r --.-. -._5a L-.-. R- 9% i i IC ?! 1; 4-P bT---- --111--I---_ LICENCE PLATE 0.75 bk t !4 2 I 0-L 2 r7 2 i- -1 6 iii CONCEALING HEADLIGHT ! ENGINE COMPARTMENT 1 LIGHT -.-.-.- EMERGENCY FLASHER SWITCH 15 10 10 L_- lb - --- ~ -. -1 3 4 5 7 11 12 13 14 15 16 17 21 22 23 24 25 FOG LIGHT, LICENSE PLATE LIGHT CONCEALED HEADLIGHT+ FRONT TURN SIGNAL ‘” HAZARD FLA SHER ---AZ7 Printed in Germany-II, 1978 current Flow Diagram 97-35

1979 Porsche 928 (USA Model) Wiring Diagrams Manual

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