Kensun High Performance AC HID Xenon"Canbus" Digital Ballasts with built-in Warning Canceller & Anti-Flicker - (1 Pair) Plug-'n-Play - installs in 20 minutes or less (no wire-cutting or special skills required) 100% Waterproof, 100% Dustproof, 100% Shockproof. Fireproof AMP connectors Quick start in cold and hot states. Instant conversion to arcing stability mode Reverse polarity protection. Short circuit protection. No-load operation protection Screened high-voltage modulus for eliminating radio interference. Suitable for 12V vehicles only.