9004 vs 9007 Headlight Bulb Wiring difference

9004 vs 9007

Did you order the wrong HID kit?  Maybe you were shipped a set of 9004 HID bulbs instead of the 9007 that your car/truck takes?  No problem!  Here is how you can switch your 9004 bulbs into 9007 and vice versa. How to configure the 9004-9007 plug so it fits with either application? You might … Read more

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Richard Nickleson is the author and owner behind Headlight Reviews. He first started the site as a hobby to share his insights on car parts and specifically headlight bulbs, but it soon ballooned and now he writes on all topics surrounding headlights bulbs. If you’ve got a bulb question, contact Richard here.