MK4 Golf/Jetta rear fog light harness and light bulb. Enables use of the rear fog light position when paired with a “euro switch”. Simply plug one end of the harness into cavity 9 on the headlight switch plug and other end into the empty cavity on the driver’s side tail light connector and twist in the bulb. Can be paired with our 5th brake light mod as well for even more added visibility to drivers behind.