The basic layout is 4-cylinder models produced since 1981. (VW Lt 28)

Basic schematic diagram - 4-cylinder models produced since 1981.

Conventional symbols for the diagram

Designation	Device	Track number
A	Battery	4
IN	Starter	5,6
WITH	Generator	2,3
C1	Voltage regulator	2,3
D	Ignition/starter switch	9-11
E1	Light switch	61-63
E2	Turn signal switch	44-46
EZ	Hazard warning switch	40-47
E4	Headlight dimmer switch	72,73
E9	Fresh air blower switch	56-58
E15	Rear window defroster switch	36-37
E22	Windshield wiper switch (pause mode)	86,87
F	Brake light switch	52
F1	Oil pressure relay	19
F2	Contact switch on the door (front left)	82
F4	Reverse light switch	27
F7	Contact switch on the door (rear sliding door)	79
F11	Contact switch on the door (rear right)	80
F12	Starter system indicator lamp contact	38
F66	Low coolant level indicator switch	20
G	Fuel level sensor	22
G1	Fuel level indicator	13
G2	Coolant temperature sensor	21
G3	Coolant temperature gauge	14
G6	Electric fuel pump	23
N	Horn switch	33
H1	Sound signal	30
J2	Alarm relay	43,44
J6	Voltage stabilizer	13
J31	Windscreen washer/wiper time delay relay	85-87
J59	Reset relay (for contact X)	59,60
K1	High beam indicator light	78
K2	Generator warning light	16
KZ	Low oil pressure warning light	18
K5	Direction indicator light	17
KB	Hazard warning light	47
K10	Rear window defroster warning light	37
K15	Choke on indicator light	38
K28	High coolant temperature warning light	15
L	Headlight, left	74,76
L2	Headlight, right	75,77
L9	Light switch backlight	59
L10	Instrument panel insert lighting	62-64
L16	Backlit fresh air ventilation controls	65
M1	Left side marker light	69
M2	Tail light, right	70
M3	Side light, right	71
M4	Tail light, left	68
M5	Direction indicator, front left	48
M6	Direction indicator, rear left	49
M7	Direction indicator, front right	50
M8	Direction indicator, rear right	51
M9	Brake light, left	54
M10	Brake light, right	55
M16	Reverse light, left	29
M17	Reverse light, right	30
N	Ignition coil	7
N3	Air bypass shut-off valve	26
Mb	Series resistance	7
N23	Series resistance of fresh air blower	56
N52	Thermistor (heating of the throttle channel section - carburetor)	25
ABOUT	Distributor	7,8
R	Spark plug terminal	7,8
Q	Spark plugs	7,8
S1 - S15	Fuses in the fuse box
T1b	Single-pole connector in the engine compartment, next to the carburetor
T1s	Single-pole connector in the rear door
T1d	Single-pole connector in the rear door
T1e	Single-pole connector behind the dashboard
T4	4-pin connector behind the dashboard
T12/	12-pin connector on the dashboard	84,85
V	Windshield wiper motor	58
V2	Fresh air blower	89
V6	Windshield washer pump	82
W	Interior light, front	80
W1	Interior light, rear/trunk (for delivery van only)	66,67
X	License plate light (for delivery van only)	66,67
Z1	Rear window defroster	34

(The original article is available at: www.VWMANUAL.ru)

Grounding points

1	Battery ground wire
3	Grounding wire from the engine to the body
10	Grounding point insert dashboard
11	Grounding point, behind the dashboard
12	Ground point under the dashboard next to the fuse box
13	Grounding point, on the rear door
14	Grounding point, on the crosspiece of the cover (passenger compartment)
15	Thin grounding, at the rear of the side member
17	Grounding cloud, on the steering gear
18	Grounding point, on the side member (rear left)
19	Grounding point, on the side member (rear right)

Color coding

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