ARex Pro Halogen Headlights: Ford Super Duty (11-16) - Alpha-Black (Set) Ford A constant current driver is

A constant current driver is a device that takes any incoming voltage and smooths it out

Eye-Catching Design: LED Daytime Running Lights and switchback sequential LED turn signals for a stylish look

the only other store offering the Philips 85122 White Vision Gen 2 bulbs that are verifiably real Philips is offering them for $260

They've become known for building headlights and now

The integrated ballast in the base of the XB D5 bulbs delivers 35W of power

ARex Pro Halogen Headlights: Ford Super Duty (11-16) - Alpha-Black (Set) Ford A constant current driver isAlphaRex Is a relatively new brand in the automotive aftermarket industry. They've become known for building headlights that are unique in style, offer various color choices, and better than average construction quality. While (in our testing) they don't do as well as the slightly more expensive Morimoto XB LED headlights, they do offer good bang for the buck and certainly worth considering. If you're interested to see what else we've got in stock for