PWM module/Anti Flicker Harness: Morimoto Canbus System
FLICKER-FREE: Is the way to be! But unfortunately, if you're trying to run a set of LED headlight bulbs on a circuit that runs off pulsed voltage, then you're out of luck. Out of luck unless you've got a set of these harnesses that is!
DESIGNED: With powerful 10K mF Capacitors inside to help absorb the pulsing current coming from the factory wiring, then release it in a smooth fashion out into the LED bulb drivers, they're quite simple and effective.
CONSTRUCTION: These are easily among the nicest PWM Modules on the planet. Whereas most are housed inside of cheap extruded housings, these are die-cast and therefore the internals can be fully potted and protected against the elements. The integrated mounting point is a nice touch. The braided mesh insulation will protect the wiring forever, and the over-molded connections are as corrosion-resistant as it gets.
PLUG AND PLAY: No need for complicated wiring to solve this common issue.
DAYTIME RUNNING LIGHTS: Often run off both pulsed voltage, and low voltage. It's important to understand which one your car uses - because if you're having issues with a low voltage setup, these will not solve that problem (since they don't increase the voltage coming from the car...they just smooth it out).