LAMPHUS 4pc NanoFlare 5" 6W Amber White LED Surface Mount Police Grill Strobe Warning Lights [SAE Class 1] Yellow Clear Grille Flashing Emergency Fire Lights for Servcice Work Truck Vehicle

Instructions would be nice.

While these are very bright, and do sync well, getting all 4 on the same pattern takes a little patience. Once done though they are working great attached to my Tour Pak for the several veteran funeral escorts I do each month.

Very bright perfect great quality

Spent quite a bit of money on 2 of these lights and had them shipped all the way to the Caribbean because I wanted a top quality product. My 3 stars is actually an "average" rating. The lights are really great and very bright with great flash options. My problem is that after only 5 months, one of them seems to be getting moisture inside it and has stopped working. So, for the one that's still working, I'll give it 5 stars! But for the one that has stopped, I'm very disappointed after all the money I spent to buy it and have it shipped all the way here. :-(Update 12/11/2015I thought it was worth a try contacting the supplier about the problem beofre deciding if I was going to purchase another one and have it shipped all the way to the Caribbean again. I was very please to hear that they would replace it, only one question asked... "Would you like this sent to the same address?"With the service I got and their willingness to stand behind their product, I won't hesitate to do business with them again. I got the replacement and installed it, and I'm a very happy customer once again. FIVE STARS

Bought two sets of these lights, installed on my semi truck paid $575 for installation, got out on the road in the first rain. They all got wet I don’t know why they would sell waterproof, lie to people. Had to take them off and buy a decent brand called Ecco reinstalled for another $513. I strongly suggest when you bought these stick them in the water overnight if they fill up with water return.

One of these lights quit working within 5 minutes after installing. Please send me a replacement light.

It's very bright like previous LAMPHUS strobes I've used, but this one seems more "directional" than previous units. When powered on, you can see a red "bar" of light up to 40' away on a building/vertical surface. It doesn't spread the beam like previous LAMPHUS units I've used. Not sure if I'm going to keep it or not.

Item brand new, very bright and emergency service grade. About a 30-40 degree arch of light however head on is blinding during the day. Does NOT come with brackets nor did i see any on amazon. Made my own. I’ll update if things change after use.