Product updated on 2021-02-04, SBX Parts - 4HIGHA, Wiring harness to convert HID headlights to 4 high operation, Recommended when installing HIDs on vehicles that turn off the low beam when on high beam. This kit does not work on vehicles with DRL on high beam unless the DRL are disabled., A 4 high headlight conversion kit will keep your low beam headlights on when you switch to high beam. This does two things. First, it provides more light on the road and close in front of you when on high beams. Second, it provides instant light in front of you when switching back to low beams. This is very useful on vehicles with HID headlights as they can take a second or two to come to full brightness when first turned on.