S2K-R Headlight Projector Development | Retrofit Source

Every product we build at The Retrofit Source starts long before it ever reaches a customer’s headlight housing. It begins with an idea, a rough concept, and a lot of hands-on work at the bench. In this post, we want to pull back the curtain on one of those journeys with the S2K-R headlight projector […]
HID Relay Harness Install Guide: 9005/9006/H7/H11 Wiring

If you have ever upgraded to an HID system and noticed flickering, dim output, or inconsistent startup, the fix is almost always the same: proper power delivery. That is exactly what a heavy duty relay harness solves. In this guide, I am walking you through the complete HID relay wire harness installation process, covering the […]
HID Ballasts Compared: Denso vs Matsushita vs Morimoto

Choosing the right ballast is one of the most overlooked parts of building a reliable HID system, and it is a question we get almost every day here at TRS. In this HID ballast comparison, we walk through the four options we tested side by side: the Matsushita, the Denso, and both the Morimoto 55W […]
HID Projector Retrofit: Mounting & Alignment Tips

Retrofitting projectors into a stock housing is one of the most rewarding lighting upgrades you can tackle in your own garage, but it lives or dies by one thing: alignment. We have done enough of these builds to know that if you skip the prep work, you will chase a crooked cutoff and uneven output […]