Electrical diagram of the Kafer 1200 car produced since August 1974. (VW Beetle)

Designation	Element name	Section of the chain
A	Battery	5
IN	Starter	6, 7
WITH	Generator	2
C1	Relay regulator	1, 2, 3
D	Ignition switch	7, 8
E	Windscreen wiper switch	8
E1	Light switch	12, 14
E2	Turn signal and light switch	9, 29, 30
E3	Hazard warning light switch	26, 28, 30, 32, 33
F	Brake light switch	22
F1	Oil pressure sensor	24
F4	Reversing light switch	34
N	Sound signal button	20
H1	Sound signal	20
J	Relay for switching to low beam and light signal	9, 10, 12
J2	Alarm relay	26, 27
K1	High beam indicator lamp	11
K2	Generator operation indicator light	23
K3	Oil pressure warning light	24
K5	Direction indicator lamp	25
K6	Hazard warning light	33
L1	Double filament left headlight bulb	10
L2	Double-filament right headlight bulb	12
L6	Speedometer illumination lamp	13
M1	Left parking light	14
M2	Rear right side light	17
M2	Right brake light	21
M3	Right parking light	15
M4	Rear left side light	18
M4	Left brake light	22
M5	Front left turn signal	28
M6	Rear left turn signal	29
M7	Front right turn signal	31
M8	Rear right turn signal	32
M16	Left reversing light	34
M17	Right reversing light	35
N	Ignition coil	37
N1	Automatic starting system	39
N3	Solenoid shut-off valve	40
O	Distributor	37, 38
R	Spark plug tips	38
Q	Spark plugs	38
S1-S12	Fuses	8, 10, 12, 14, 18, 19, 22, 25, 26
S13	Reversing light fuse (8 A)	34
T	Wiring harness behind the engine shield	-
T1	1-pin connector (behind the dashboard, under the back seat)	-
T2	2-pin connector in the trunk	-
T3	3-pin connector behind the engine shield	-
T20	Central connector	36
V	Windscreen wiper motor	8
W	Interior lighting	19
X	License plate light	16
Connections to "mass"
1	Ground wire from the battery to the body	-
2	Ground wire from the generator to the body	-
4	Ground wire to the clutch	-
10	Instrument cluster ground terminal	-
11	Speedometer ground terminal	-

Information on using electrical circuits is available here →

Conventional symbols for electrical circuit elements are here →