CF18 (LM449) LED Turn Signal Flasher Diode Dynamics Volvo Cool Performance:Â Integrated aluminum heatsink

Cool Performance: Integrated aluminum heatsink dissipates heat effectively

This allows the product to work on more vehicles

not increased output

Durable: Built with a tough polycarbonate lens and aluminum housing

CF18 (LM449) LED Turn Signal Flasher Diode Dynamics Volvo Cool Performance:Â Integrated aluminum heatsinkHyperblink Fix. Why do you need this module? When your factory turn signal bulbs go out, your vehicle's flasher senses that less power is being used, and it will blink the turn signals quickly to alert you. Since LED bulbs use less power, you get the same fast blinking, known as hyperblinking, even though the LEDs are functioning just fine. Basically, your car thinks the bulbs went out! To slow down the blinking to regular speed, you can add resistors