BICYACO 4 PCS DOT 4x6 Inch LED Headlights Rectangular Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth Freightliner Ford Probe Oldsmobile Cutlass

I bought these for replacement of regular halogen H4666 bulbs for my snowway snow plow. They worked great, super easy to install and came with wiring adaptors. Heads and tails brighter than the old yellow lights.. should have done this 2 bulb replacements ago..

I was skeptical. I have about 25% success when it comes to buying anything LED. This one is a success. I installed them on a Chevy W4500 (aka Isuzu NPR). This buy comes with 4 lights. After installing just 2 of them, they were already much brighter than the old sealed beam halogen lights. I almost saved the other 2 lights for another truck but decide what the heck, installed those as well. They have a nice cutoff so you're not blinding other people. And light is focused where you need it. This isn't one of those crappy lights that blinds everyone, yet fails to to light up the area directly in front of the vehicle. Fitment was good. I didn't have to make any modifications. As for wiring... On many vehicles, wiring modification will be required. This is because this light (and most LED lights) are polarized. Halogen lights are not. Meaning, a halogen light doesn't care about polarity (which lead is positive and which is negative). An LED will only work with the correct polarity. That is, there is a negative lead and a positive lead. If you switch them around, it won't light up. Lots of cars wire up the lights in odd ways. They were able to do this because Halogens are not polarized. For instance on my truck, when the low beam is off, the wires are + and +. When the low beam is on, it's + and -. Same goes for the high beam. So, instead of the lights being constantly connected to ground and having the + wire switched off and on, my lights did the opposite. Even with the lights off and ignition switch off, all the wires to the lights had +12V. So, I had to wire up two relays and a fuse to get them working. Other than the 2 hours it took to wire it all up, I had no issues.

Really bright but wish the were heated love to freeze up in the snow

For the price these are hard to beat. Great vision, able to adjust where they don’t blind on coming traffic, fit like a glove. Plug and play for my 98 Peterbilt. Amazing lights. They may be better ones but I don’t know how they could get any better.

Other than wiring them to my truck they’re awesome and have been holding up well crazy bright

I just want to start off by saying WOW these make a difference; and also they have three wires, if you can't figure out how to switch three wires around then you might want to leave any mods to your wiring to a pro but with this its basically plug and play, they even include an h4 pigtail for easy of installation. The feel of the lights is abit on the lighter side, the lens seems a tad thin but not a deal breaker. The housing is a smidge too big for the silver retaining ring for my old headlights but I made it fit anyways. When it comes to the light out put they are far better then stock and I definitely would say they have the best beam pattern for any led I've ever bought. The cut off is pretty solid and straight with only marginal amount of haze so it's not going to totally dazzle on coming drivers. The low beams could be a tad more intense; what I did is I jumped the low beams on the inner lights to the outer ones so all four are high and low and it makes up more then enough of what they where lacking with just the two low beams. I've only driven around town so far and the lights out shine all, I'll up date with how well they do when driving in the back country where I live when I get the chance. I took a gamble with these and it paid off so far, I will recommend these to anyone that need 4x6 lights hands down.

Very nice design, very bright quick to install. If you have trouble with hi/lo beam both being on just re-pin with the included harness and both will function as normal! Highly recommend! Sorry for the blur, photo was taking from a potato!

Great headlights for my rv

Très bonne visibilité

Good quality. Easy to install.

The customer service was top notch. Amazing seller, lights were great and really high quality. Amazing!

Je suis vraiment satisfaite de ces lumières. Parfaites sur mon Kenworth W900L.