PWM Module: GTR Ultra 2.0 (Pair / H4/9003) GMC This allows them to be

This allows them to be more reliable when used on vehicles that have voltage fluctuations due to electrical system design or fault

and control -- making it the most effective off-road LED fog light in the world

You can protect your investment with our optional OEM Ballast Potting Service

AlphaRex Design AlphaRex developed the Chevy Silverado HD PRO-series headlights based on its stock design and add a LED tube around the edge as DRL and sequential turn signal

PWM Module: GTR Ultra 2.0 (Pair / H4/9003) GMC This allows them to bePulse Width Modulation: Is frequently found in the electrical systems that run the headlight circuit in many modern vehicles, and when it comes to HID or LED upgrades, that's a problem since it results in constant flickering on the new setup Do you need these? Not sure whether or not you'll need these when doing an upgrade on your vehicle? Check out the rule of thumb guide in the tech specs below for some information to help you make the best