AutoLEDTech.com 's Flow Series voltage regulators drop 12 volts down to the required 5 volts that our Flow Series halos and DRLs operate on. They feature an in-line fuse as well as 1ft leads with hooped battery terminal connectors for quick, simple install. The 5-volt end that connects to our wiring harness features a 2-pin Deutsch connector to easily connect to our wiring harnesses. No more soldering together the wiring harness and voltage regulator!