If you cruise the backroads near Union and St. Clair, or show up to weekend meets in Washington, MO, rock lights are a game-changer.
They illuminate the ground around your tires and suspension, help you spot obstacles on trails and river access points, and give your build a head-turning look when you're out cruising.
At FASS Motorsports in Washington, Missouri, we sell and install premium rock lights from Diode Dynamics and Morimoto—two brands known for bright output, reliable housings, and clean wiring solutions.
Brands We Trust: Diode Dynamics & Morimoto
Diode Dynamics:
- Known for high-output LEDs engineered in the USA
- Durable housings and potted electronics for real-world abuse
- Wide beam options for even ground coverage under your truck
Morimoto:
- Crisp, uniform light with industry-leading optics
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Sleek, low-profile pods that tuck neatly under lifted builds
- Complete kits with tidy harnessing for pro-grade installs
Want a specific color or mixed-color set for your show truck? Ask our team about single-color, RGB, and app-controlled options.
Professional Installation at FASS Motorsports
Installing rock lights is more than just sticking pods under the cab. We design each setup for optimal placement, clean routing, and long-term reliability.
What our installs include:
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Lighting layout planning: We map your wheel wells, frame rails, steps, and undercarriage for even, shadow-free coverage.
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Weatherproof wiring: Heat-shrink, loom, and protected routing to prevent snags on trails or corrosion from Midwest winters.
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Switches & app integration: Choose a discreet in-cab switch, pair with an existing switch panel, or go full Bluetooth/app control.
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Battery management: Proper fusing, relays, and tidy connections so everything is safe and easy to service later.
- Add-on integration: We can tie rock lights into other accessories like FASS heaters, rock lights-as-courtesy illumination, or other 12V circuits with appropriate relay control.
Ideal for Lifted Trucks, Jeeps, & Off-Road Builds
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Lifted trucks: More ground clearance means more shadows—rock lights fill the dark zones so you can place your tires precisely.
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Show builds: Frame details, powder-coated control arms, and polished suspension components deserve to be seen at night.
- Daily drivers: Use rock lights as low-glare work lighting when hooking up trailers, checking a campsite, or navigating a river access.
Serving Franklin County and nearby: Union, St. Clair, New Haven, Pacific, Gray Summit, Villa Ridge, Labadie, Augusta, Sullivan, and beyond.
Choosing the Right Rock Light Kit
1) Output & Optics
Look for measured lumens and beam patterns that reduce hot spots. Diode Dynamics and Morimoto both excel here.
2) Pod Count & Coverage
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Basic (4–6 pods): Clean under-cab glow for street/show
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Standard (8 pods): Even wheel-well and frame coverage
- Premium (12+ pods): Full undercarriage + bumper/step accents
3) Control Options
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Single-color: Simple, bright, and reliable
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RGB/RGBW: Color control via app or controller for meets and shows
- Scenes & Zones: Program puddle lights, courtesy lights, or trail-only modes
4) Build Quality
IP-rated housings, potted internals, stainless hardware, and UV-stable lenses last longer—especially through Missouri’s seasonal extremes.
Install Timeline & What to Expect
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Consultation: Stop by our showroom just off Highway A in Washington, MO to pick your kit and color options. Bring photos of your truck for layout planning.
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Estimate: We’ll provide a clear quote based on pod count, wiring complexity, and any add-on integration.
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Professional Install: Our techs complete the install with tidy, serviceable wiring and protected mounting.
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Walkthrough: We show you controls, dimming, color modes (if applicable), and safe usage tips.
Care, Maintenance, and Trail Tips:
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Keep it clean: Rinse mud and road salt from lights and brackets after trail days or winter storms.
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Check fasteners: Re-torque mounting hardware after the first few weeks of driving.
- Battery health: Avoid leaving the system on when parked—consider a hardwired master switch.
Are Rock Lights Legal on the Street?
Regulations can vary by location and color. As a best practice, use white or amber on public roads and reserve other colors (like red/blue or multi-color effects) for private property, meets, or off-road use.
Our team can help you choose street-conscious settings and switch configurations. (Not legal advice—always verify local rules.)
Why Franklin County Truck Owners Choose FASS Motorsports:
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Trusted brands: Diode Dynamics & Morimoto in stock or available to order
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Clean installs: Tidy wiring, proper fusing/relays, and long-term reliability
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Local expertise: We build for Missouri weather, washboard gravel, and Midwest trail use
- One-stop shop: While you’re here, check out lift kits, wheels/tires, traction bars, steps, and more in our showroom
Get a Quote or Book Your Install
Ready to upgrade your lighting? Swing by our Washington, MO showroom (just off Highway A) or call us to schedule. We serve truck and Jeep owners throughout Franklin County and surrounding areas.
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Call: (636) 429-7020
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Visit: FASS Motorsports, 25 Town & Country Drive, Washington, MO 63090
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Hours: 8:00 a.m. to 6:00 p.m. CST, Monday through Friday
- Request a Quote Via Email: info@fassmotorsports.com
FAQs
What’s the difference between rock lights and underglow?
Rock lights were originally designed to illuminate the ground and wheels for trail visibility; underglow is purely for aesthetics. That said, modern rock lights kits look great on the street and perform very well on the trail.
How many pods do I need?
Most lifted trucks start at 8 pods for even coverage. Show builds or long wheelbases may prefer 12–16.
Can you integrate rock lights with my other accessories?
Yes—switch panels, relays, and app controls can unify your rock lights with steps, bed lights, or a winch light.
Do you install customer-supplied kits?
We prioritize brands we trust (Diode Dynamics & Morimoto) for warranty and quality, but talk to us—we’ll evaluate your kit.