* AutoZone: AutoZone sells Haynes and Chilton repair manuals for the 1981 Rabbit, which include wiring diagrams.
* Online Manuals: There are several websites that offer free online access to wiring diagrams for the 1981 Rabbit. Some of these websites include:
* [Volkswagen Workshop Manuals](https://volkswagen.workshop-manuals.com/1981/vw_rabbit/)
* [My Wiring Diagrams](https://www.my-wiring-diagrams.com/1981-volkswagen-rabbit/)
* [VW Heritage Parts](https://www.vwheritageparts.com/diagrams/rabbit-golf-and-jetta/)
* Local Library: Many local libraries have automotive repair manuals in their collection, including manuals for the 1981 Rabbit.