Volkswagen Bus, Vanagon, Eurovan Wiring Harnesses These are complete wire harnesses and are precise reproductions of the original VW harnesses. Each comes with a detailed installation set of instructions with color coded attachment clips. The Main Loom connects the engine and the fuse box. The Complete wiring loom contains all wires from front to rear, including the main loom wiring. vanagon wiring harness | eBay Genuine Volkswagen Wiring Harness With Resistance For Fan Motor NOS 253971565E See more like this. NEW CAR STEREO CD PLAYER WIRING HARNESS WIRE ADAPTER PLUG FOR AFTERMARKET RADIO (Fits: Vanagon) Brand New. 5.0 out of 5 stars.