Brake Lights/Tail Lights
Wiring of 2-prong brake light switches ('68/'69) with 3rd switch for warning light.
Wiring of 3-prong brake light switches
('70 and later) with warning light connection.
Shows how the warning light circuit works.
Wiring of 3-prong brake light switches ('70
and later). Another view showing the actual plug/socket wiring to
Internal circuit details of later brake
system dash warning lights.
Tail light wiring: '68 thru '72 Beetle showing wire colors.
Tail light wiring: '73 thru '79 Beetle showing wire colors.
Wiring of the headlight sockets.
Headlight Dimmer Relay circuit '66
Headlight Dimmer Relay circuit '71
Turn Signal Flashers and Hazards
VW used a
number of different schemes over the years
on both Beetles and Busses. This article explores some of the
common aspects of the circuits. Detailed diagrams along with
are included for each case.
Quick Links to all of the diagrams (no text):
| Turn Signal Simplified
Diagram, 3-Term Flasher
|| '62 -
'65 Bus Hazard Relay
|Turn Signal Simplified Diagram, 4-Term Flasher|| '68 - '71 Bus 6-Wire Turn
| 3-Wire Turn Signal with
To Add Separate Stop Lights to '66 - '71 Bus
| Early 6-Wire Turn Signal
|| Internal Electronics Circuitry
of 3-Terminal Flasher
| '68 - '71 Bus 6-Wire Turn
Signal with Hazard Switch
||Internal Electronics Circuitry of 4-Terminal Flasher|
Schematic of Fuel Injection system, '75 -'79 Type I and Type II.
Description of Fuel Injection circuit, '75 -'79 Type I and Type II.
Wiring of 12 Volt, 2-speed wiper (Steering column-mounted switch).
Description of circuit for 12 Volt, 2-speed wiper (Steering Column-mounted switch).
Wiring of 12 Volt, 2-speed wiper (dash-mounted switch).
Description of circuit for 12 Volt, 2-speed wiper (dash-mounted switch).
Wiring diagram for 6V Single-speed wiper.
How do I test my Generator ?
Generator to Regulator wiring.
6V To 12V Conversion - Check List
Wiring diagram for Type I cars with alternator.
Wiring details for Type I alternator with external regulator (Motorola).
Description of Alternator operation.
Internal wiring of Motorola Alternator w/ external regulator.
Wiring for conversion from Generator to Alternator.
Adding a dash warning light to a Buggy with Alternator.
How to test for excessive "drain" on the battery.
What is this plug in my engine bay?
Using a 3-wire turn signal switch with single-bulb tail lights .
How to wire the carb (choke and solenoid) to the coil.
Audible warning circuit for Oil pressure, Generator, Lights left on.
Audible warning circuit for Oil pressure, Generator.
Starter /seatbelt interlock wiring on '74 Type I (How to bypass it.)
Wiring of backup lights.
Where is the Backup Light switch located?
Wiring of plug for Turn Signal switch ('72 Up)
Wiring of plug for Ignition switch ('72 Up)
Safety circuit for adding an electric fuel pump.
Another scheme for adding an electric fuel pump. This one "primes" the pump during cranking, eliminating need for a push button.
Circuit that simulates Term #57 on the Type II Headlight switch.
9-Terminal Flasher explained. This
is a Link to the page written by
Matt Roberds. Use your browser BACK button to return here.
Circuit diagram for rear window defogger on Type 1 cars.
Where to jumper on the starter solenoid to test starter.
An easy way to test the starter under the rear seat of Type 1 cars (12 Volt).
How to add a dip-stick temperature probe and be able to tell what the dash warning light means.
How to add a tachometer without running new wires to the engine bay. (Same page as above.)