This little harness is a plug-n-play solution for adapting H5 (9004) to H4 headlight plugs. Sold individually.
Late model Vanagons (1986-91) that were sold new in North America were supplied with Department of Transportation (DOT) approved H5 square lenses that were far inferior to the European H4 lenses that were delivered on vehicles sold elsewhere around the world. While we do offer high power headlight upgrades for these H5 lenses, a very popular alternative upgrade is to convert the rectangular lenses to round H4 lenses, or upgrade to Euro-style H4 rectangular lenses for superior lighting. Whatever direction you choose to go, this harness will make the H5-to-H4 conversion a snap!