PLEASE LOOK at your factory wiring to see what connectors you have and verify you are ordering the correct harness. 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.

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