Diode Dynamics Fog Light Wiring Kit

Diode Dynamics Fog Light Wiring Kits: Factory-Grade Installation, Zero Compromise

When you invest in a premium LED fog light upgrade, the last thing you want is a messy, unreliable wiring job undermining the whole build. That's exactly the problem Diode Dynamics set out to solve with their lineup of purpose-built fog light wiring kits — engineered to bring the same level of precision and quality to your electrical connections that their lights bring to your beam pattern.

Fog light wiring kits from Diode Dynamics are designed around one core principle: factory-like operation without factory limitations. Unlike other basic harnesses on the market, the Diode Dynamics Add-On Fog Harness uses an activation and deactivation wire paired with a toggle switch so your fog lights turn on automatically any time the headlights are on and the switch is engaged — no manual intervention required every time conditions get rough.

Two Harness Families for Every Stage Series Build

Diode Dynamics offers their fog light wiring kits in two distinct connector configurations to match their Stage Series LED pods:

• DT 2-Pin Fog Light Wiring Harness — Compatible with non-backlit Stage Series lighting products, featuring dual Deutsch DT 2-pin output connectors and the capacity to safely provide up to 10A of power.
• DT 4-Pin Fog Light Wiring Harness — Designed for Stage Series LED pods with backlight functionality, using dual Deutsch DT 4-pin output connectors and including a dedicated Backlight Activation Wire that can be tied to a fused 12V source for automatic backlight control.
• Universal Add-On Fog Harness — Available in H11, 9006, or 5202-size output connectors, this option is compatible with a broader range of fog lamps and LED pods beyond the Stage Series ecosystem.

All three harness options share a robust electrical foundation: high-capacity 16AWG wiring, a 15A waterproof fuse, and solid-state relay construction that's built to handle real-world conditions under the hood.

Plug-and-Play with Auxiliary Switch Compatibility

One of the most thoughtful features across the Diode Dynamics wiring kit lineup is native compatibility with factory-installed auxiliary switch banks. If your vehicle came with an OEM auxiliary switch panel, you can route one of those outputs directly to the harness in place of the included toggle switch — delivering an integration that looks and feels completely stock. The deactivation wire logic also allows the harness to automatically cut fog light output when high beams are activated, keeping your setup road-legal and glare-free for oncoming traffic.

Engineered and Assembled in the USA

Diode Dynamics is the largest specialty-application aftermarket vehicle lighting manufacturer in the U.S., designing and assembling products from their St. Louis, Missouri facility. Every wiring kit reflects that same standard: thoughtfully engineered, tested for reliability, and backed by a 3-Year Worry-Free Warranty. If anything goes wrong, Diode Dynamics will troubleshoot and replace — no lengthy return-and-repair delays. For enthusiasts building out a complete Stage Series fog light system, these harnesses are the essential last step that ties the whole installation together cleanly and confidently.