Typical layout — 6-cylinder models produced in 1986 and 1987 (VW Lt 28)

Typical schematic diagram - 6-cylinder models produced in 1986 and 1987

Conventional symbols for the diagram

Designation	Device	Track number
A	Battery	4
IN	Starter	5-7
WITH	Generator	2,3
C1	Voltage regulator	2,3
D	Ignition/starter switch	10-14
E1	Light switch	76-80
E2	Turn signal switch	55,56
E3	Hazard warning switch	52-59
E4	Headlight dimmer switch	86,87
E9	Fresh air blower switch	72,73
E15	Rear window defroster switch	46-48
E20	Instrument/dashboard dimmer	80
E22	Windshield wiper switch (pause mode)	100-102
F	brake light switch	65,66
F1	Oil pressure switch (1.8 bar)	42
F2	Contact switch on the door (front left)	95
F4	reverse light switch	69
F7	Contact switch on the door (rear sliding door)	92
F9	Handbrake on indicator light switch	40
F11	Contact switch on the rear door	93
F22	Oil pressure switch (0.3 bar)	41
F26	Automatic choke thermal switch, front air intake pipe	19
F34	Low brake fluid level alarm contact	39
F35	Intake manifold heater thermal switch	16
F66	Low coolant level warning light switch	23
F112	Carburetor cooling air blower thermal switch	21
G	Fuel level sensor	25
G1	Fuel level indicator	28
G2	Coolant temperature sensor	24
GЗ	Coolant temperature gauge	29
G6	Electric fuel pump	26
N	Horn switch	44
H1	Sound signal	43
J2	Alarm relay	53,54
J6	Voltage stabilizer	28
J31	Windscreen washer/wiper time delay relay	98-101
J59	Reset relay (for contact X)	74,75
J81	Intake manifold heater relay, on auxiliary relay adapter	15,16
J114	Oil pressure monitoring system control unit	33,34
J120	Low brake fluid level warning light switch, on auxiliary relay adapter	22,23
J183	Carburetor cooling air blower relay (time relay)	20,21
K1	High beam indicator light	37
K2	Generator warning light	31
KZ	Low oil pressure warning light	35
K5	Direction indicator light	32
K6	Hazard warning light	58
K7	Dual brake circuit and handbrake warning light	39
K10	Rear window defroster warning light	48
K28	High Temperature/Low Coolant Level Warning Light	30
L1	Dual-filament headlight bulb, left	88,90
L2	Double filament headlight bulb, right	89,91
L9	Light switch illumination lamp	74
L10	Instrument panel insert lighting lamp	36-38
L16	Fresh air ventilation control illumination lamp	70
L28	Cigarette lighter illumination lamp	50
L39	Rear window defroster switch illumination lamp	47
M1	Left side marker light	83
M2	Tail light, right	84
M3	Side light, right	85
M4	Tail light, left	82
M5	Direction indicator, front left	61
M6	Direction indicator, rear left	62
M7	Direction indicator, front right	63
M8	Direction indicator, rear right	64
M9	Brake light, left	67
M10	Brake light, right	66
M16	Reverse light, left	69
M17	Reverse light, right	68
N	Ignition coil	8
N1	Automatic choke	18
N3	Air bypass shut-off valve	17
N6	Series resistance	8
N23	Series resistance of fresh air blower	72
N36	Series resistance of automatic choke	18
N51	Intake manifold heater heating element	15
ABOUT	Distributor	9-13
R	Spark plug terminal	9-13
Q	Spark plugs	9-13
R	Radio receiver connector	49,51
S1-S15	Fuses in the fuse box
S50	10A fuse, terminal 58b, on the auxiliary relay adapter	80
S51	Carburetor cooling air blower fuse	20
T1	Single-pole connector in the engine compartment
T1a	Single-pole connector, behind the dashboard
T1b	Single-pole connector, behind the relay panel
T1s	Single-pole connector, behind the dashboard
T1d	Single-pole connector, near the carburetor
T1h	Single-pole connector, near the carburetor
T1i	Single-pole connector, behind the dashboard
T2	2-pole connector, behind the relay panel
T2a	2-pin connector, behind the dashboard
T2b	2-pin connector, behind the dashboard
T2s	2-pin connector, behind the dashboard
T4	4-pin connector behind the dashboard
T4a	4-pin connector behind the dashboard
T8/	8-pin connector, on the dashboard insert
T14/	14-pin connector on the instrument panel insert*
U1	Cigarette lighter	51
V	Windshield wiper motor	97,98
V2	Fresh air blower	73
V5	Windshield washer pump	103
V62	Carburetor cooling blower, on the left side of the engine	20
W	Interior light, front	95,96
W1	Interior light, rear/trunk	93,94
X	License plate light	82
Y	Watch	36
Z1	Rear window defroster	45

[The information is presented on the website vwmanual.ru]

*The T14 connector contacts are designated according to the PCB layout of the instrument cluster insert, not according to the wiring harness connected to the connector.

1	Ground wire from the battery to the body
3	Ground wire from the engine to the body
15	Grounding point on the cylinder head
23	Ground wire above the steering gear
30	Grounding point next to the relay panel
31	Grounding point on the instrument panel insert
33	Grounding point behind the instrument panel on the right
65	Grounding point on the rear side member
68	Grounding point on the rear crosspiece, left
69	Grounding point on the rear crosspiece, right
71	Grounding point on the front roof rail
72	Grounding point on the roof rail
79	Grounding point next to interior light, at the rear

Not everything listed is available on all models

Color coding

• sw - black
• ws- white
• be - blue
• ro - red
• gn - green
• gr - gray
• ge - yellow
• pi - pink
• br - brown
• li - lilac