Headlight Conversion Adapters For 2003-2005 Nissan 350z HID wiring 8 TO Halogen 6 The harnesses in this listing will allow your 03+ 350z with a factory headlight harness that has 8 pins/wires to use a new headlight that has 6 pins/wires. Again, your car's harness will have an 8 pin connector and your new headlight will have 6 pins. These new harnesses will allow you to plug that new 6 pin headlight into your 8 pin factory connector. Easy to install. Direct replacement the worn headlight conversion adapters, only requires a couple of tools and several minutes of your time. No modification required.