DO I NEED A RELAY FOR MY HID KIT?

Single beam HID kits (H1, H3, H7 etc.) do not require a relay. Single beam bulbs are where the light is only used as a dip beam (regular driving light).

Dual beam / Bi-Xenon HID kits.

This type of the kit requires  a relay so that the solenoid within the bulb, typically (H4) which then pitches the bulb upwards allowing for the “high” beam or “flash” function.