Diode Dynamics Add-on DT 2-Pin Foglight Wiring Harness
Warranty Information
Vendor warranty summary
Diode Dynamics Warranty
At a glance: 3 years on every Diode Dynamics product, 8 years on Stage Series and Elite Series lamps, and lifetime coverage on Stage Series pods, rock lights, SL2 bulbs and off-road brackets (orders from April 15, 2025)
This is Diode Dynamics' policy, not an NVMOS policy. We've summarized Diode Dynamics' published warranty in plain English. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 15, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| All Diode Dynamics products: defects in materials and workmanship | 3 years |
| Stage Series and Elite Series lamp assemblies and lamp mounting brackets (functional failure; wiring, harnesses and lens covers excluded after year 3) | 8 years |
| Stage Series LED pods, Stage Series rock lights, SL2 and SL2 Pro LED bulbs, off-road mounting brackets, ordered on or after April 15, 2025 (functional failure after year 3) | Lifetime |
| Commercial or industrial use (construction, mining, fleet, agriculture and similar) | Capped at 8 years |
| Form Lighting products (a Diode Dynamics brand) | 2 years (details) |
What's covered
- Defective products are replaced with the same item, or a comparable one if it's been discontinued
- Diode Dynamics may replace just the failed component
- Finish defects caused by manufacturing, during the first 3 years
- Moisture beyond normal condensation that points to a seal failure, at Diode Dynamics' discretion
- Free tech support for the life of the product, even after the warranty ends
What's not covered
- Normal condensation, and paint or coating wear from regular use
- Installation or labor costs
- Improper installation or use, abuse, or opening, rewiring or repairing a product
- Swapping lenses on Stage Series lights voids the 3-year coverage (the 8-year coverage stays)
- Purchases from unauthorized sellers; coverage is for the original buyer and isn't transferable
How to make a Diode Dynamics claim
- Keep your proof of purchase; every claim needs it (gift recipients can register within 90 days of the original purchase instead)
- Request an RMA through Diode Dynamics' returns portal and work through diagnosis with their support team
- Nothing goes back without an RMA number; include photos for moisture claims
- For US customers, Diode Dynamics covers shipping on 3-year claims, plus return shipping for inspection on 8-year and lifetime claims
Diode Dynamics contact: Phone: (314) 205-3033 · Contact form · Monday to Friday, 10 AM to 5 PM Central · St. Charles, Missouri
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to Diode Dynamics, and help it along either way.
Disclaimer: The information on this page describes Diode Dynamics' own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: Diode Dynamics warranty. Last updated on nvmos.com: October 15, 2026. See our return policy for NVMOS's own terms.
About the brand
Diode Dynamics builds LED lighting in St. Charles, Missouri: Stage Series SS3 and SS5 pods, CrossLink light bars, ditch and fog kits, bulbs and accents. It designs, engineers and assembles as much as it can in the USA instead of rebranding imports, which shows in the warranty. NVMOS carries the Diode Dynamics off-road, vehicle lamp, bulb and accent lines for Toyota, Jeep, Ford, GM, Ram and Nissan trucks and SUVs,...
Based in: St. Charles, Missouri · Founded: 2006 · Made in: Designed and assembled in the USA · Quality: ISO 9001:2015 certified · Lead time: In-stock items usually leave Diode Dynamics the same business day; ask us about any item
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Warranty terms are set by Diode Dynamics, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
The Diode Dynamics Add-on DT 2-Pin Foglight Wiring Harness lets you add fog lights or pods to a truck or SUV and have them behave like factory equipment. It feeds two Deutsch DT 2-pin outputs through 16AWG wire, a 15A waterproof fuse and a 15A relay, and it works with factory-installed auxiliary switches. It is universal and matched to non-backlit Stage Series lights.
Why it works
Most add-on lights end up on an aftermarket switch somewhere on the dash. This harness is built for factory-like operation instead, and it can work with the auxiliary switch your vehicle already has from the factory. Two DT outputs mean a pair of pods plugs straight in with no splicing, and the fuse and relay are already in the loom.
Which harness to pick
This is the 2-pin version, for non-backlit Stage Series lighting. If your pods have backlighting, use the DT 4-pin version of this harness. If your fog lamps use H11, 9006 or 5202-style plugs, Diode makes an OEM-plug version too.
Specs at a glance
- Outputs: dual Deutsch DT 2-pin
- Wire: 16AWG
- Fuse: 15A waterproof
- Relay: 15A
- Weight: 1.06 lb
- Part number: DD4109
Warranty
Covered by Diode Dynamics' 3-year replacement limited warranty. The details are on our Diode Dynamics warranty page, and the rest of the lineup is in the Diode Dynamics collection.
Questions before you order?
Fitment questions are easier to settle before the box ships. Call or text Carl & Anton at (920) 249-7744 or use the chat — real humans in Sheboygan, Wisconsin, not a call center.
Specifications
Diode Dynamics Add-on DT 2-Pin Foglight Wiring Harness FAQs
Is this for backlit pods?
No. The 2-pin version is for non-backlit Stage Series lights. Backlit pods need the DT 4-pin version.
Can I use my factory auxiliary switch?
Yes. It is designed to work with factory-installed auxiliary switches for factory-like operation.
How many lights does it run?
It has two Deutsch DT 2-pin outputs, so a pair of lights.
Not sure which harness you need?
Call or text the real humans at NVMOS, (920) 249-7744, and tell us which lights you are running.
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