18-Pack Ultra Bright Blue LED Emergency Strobe Lights Bar - High Visibility Flashing Warning Lights for Windshield, Dash & Grille - Ideal for Emergency Vehicles, Trucks & Off-Road Use

1 side had 1 light workig out of 3. Emailed seller with no reply.Purchased these lights to put on the rear of my UTV to give me greater exposure while on or near public roads. Installed these without incident with the exception of having to splice in more wire to mount the controller. After a couple weeks the middle light on each side stopped working. I contacted the company and they asked that I send them a pic of the issue and they immediately sent me a replacement set and sent and apology. Not sure what else you could ask from a company than great customer service. The lights are very bright even during the day and command attention. This is an incredible product for the price which is very affordable. Installing the replacement set today and will report back if there are issues but sure don't anticipate any. Thanks for a great product!No problems with this product if your are moderately handy/ tech savy. Tips: I securely reinforced all the wire junctions (male/female clips) with electrical tape to prevent them from getting pulled out over time. Also to mount the LEDs to the top of my windshield I went to my local hardware store and bought adhesive picture frame clips, stuck the clips to the bracket, and the lights clipped right into the top of my windshield and displayed PERFECTLY (clipped onto the fabric of the interior roof of my car) no bolts or screws. 10/10 for the price can't beat it. Used the lights for a motor vehicle accident call within 5 min of finishing installation (total install about 30 min) Looked good on scene. FYI you need an accessory power line installed to avoid real headaches (I already had one installed previously by a local car stero shop). Second best would be a splice from a cigarette lighter for power.bought this twice. some of the lights are not working on the second set that i bought. will edit this review if i hear from the seller.UPDATE!! just got a replacement light from the seller. thanks Tracy....appreciatory valve wide open and finger fudging the like button on the extra two stars!!It was a good product but there are some better ones. I mounted mine on the lower portion of my dash. The look good at night but they could be brighter in the day timeNot as bright in the daytime as I would like. That is only reason of not giving 5 stars.I installed these lights in August 1 week after I purchased them. I found out they are not very waterproof. 1 of the 2 banks of lights got water in them?