PWM Modules: Morimoto Anti-Flicker Cap. Link
More and more: Modern vehicles are coming from the factory with headlight circuits that utilize pulsed voltage to run things like Daytime Running Lights or as a means to deter owners from modifying their lights. Unless you've got the right parts (ahem, this HID anti-flicker capacitor) then prepare for buzzing relays and flickering headlights! Flicker-Proof: So, you installed a HID system on your car that uses a pulsing with headlight circuit? Without a capacitor link: Even if you installed a relay harness, the ballasts and bulbs with flicker/flash since the pulsed current coming from your factory wiring will translate into the relays - causing them to open and shut rapidly (which often sounds like a buzzing noise) Easy Fix: The Morimoto Capacitor Link has a simple plug-n-play installation between the factory output and the relay harness input with just one ground. It will intercept the pulsed voltage, store it, and then release it smoothly into the harness. This HID anti-flicker capacitor basically translates irregular "on/off" signals to constant "on" signals. Ingredients: The Morimoto Capacitor Link utilizes a 10,000uF electrolytic capacitor, 14 gauge wiring, and OEM-quality 9006 Male/Female Input/outputs for universal compatibility with basically all single-xenon or low beam relay harnesses.