Review on 🚦 DOT Approved 60W 4x6 Inch LED Headlights - Chrome (4 PCS) Rectangular Replacement Compatible with Peterbilt, Kenworth, Freightliner, Ford, Probe, Oldsmobile, Cutlass - H4651, H4652, H4656, H4666, H6545 by Brandon Boones

I replaced my stock headlights (H4656 and H4651) with these and it was practically a night and day difference. This was on my 2000 Pete 379. Had to use a couple of included adapters to switch wiring to get it working properly. Everything was working great at this point but as my truck was never connected to the low beam for all 4 headlights I installed a jumper from the adjacent headlight to normally just the high beam unit but with these units I now have 4 low bars. and 4 Hi Beams. The dipped beam has a very distinctive line, so it can be adjusted so that it does not dazzle oncoming traffic.