Our color coded wiring diagrams can serve as a guide or reference for you while restoring your Volkswagen's wiring. VW Bug Electrical Wiring & Assembly Diagrams: Complete Wiring Diagrams: 1955-1972 VW Beetle. VW Wiper Switch Terminal ID Charts.. Of all of the electrical circuits in a VW Beetle, the horn (specifically the ground) circuit.. One thing it uses from the 1970 diagram is the ground wiring between the wiper motor, the turn signal relay, and the ground point on the speedometer. It uses the dual-ground wires coming off one spade just like in your photo above, which attaches to the 31 terminal on the turn signal relay ("J2" in the diagram here):
Volkswagen Wiper Motor Wiring Kit 2 speed wiper motor connection using correct two speed wiper switch 12 volt 1972-74 Beetle WIPER White 2 speed wiper motor switch mounted in steering column 1972-74 Beetle 53e 53b 53 53a 31 Notes: 1. This kit is designed to work with the correct combination of wiper switch and wiper motor for the year of the.. 31b: brown wire to wiper motor 31b (park ground) 31: brown wire to dimmer switch (ground toggle for dimmer relay) (unlabeled): ground symbol to wiper switch body (park ground) Circled 4: Wiper motor grounds through case mounting to body. (But can also be a separate brown wire from wiper motor #31 to ground depending on year/part.)