Sidaqi 2Pcs 12LED Amber Light Bar - Ultra-Thin Surface Mount Warning Flashing Strobe Light for Trucks, Off-Road Vehicles, SUVs (12-24V, 18 Modes) - Construction Caution & Emergency Safety Lighting for Roadside, Work Zones, and Hazardous Conditions

They work really wellI wanted added lights to the rear of my police vehicle, I’m surprised how bright the light is and how easy it was to install. They took extra care in how they package it to ship. I was so impressed I bought two more sets of 4!! I work a major Hwy and this is what I truly was looking for and the price is cheap compared to others!! Thank youProduct came fast and was easily installed however one of the four lights just stays on blue will not flash no matter what I do but they work good for the priceI got a set of these to use as safety/visibility lights while walking at night. Just bench testing for functionality so far and they're not quite red, they're more of a pink color. Additionally they got super hot in the few minutes that I was testing them.Bought these to add to my motorcycle brake light. I wanted something that would strobe enough to get driver's attention, something a little more than my current LED brake light with modulator. I figured I'd try these at $20 for four lights. I modified a bracket and installed 2 lights on the bracket. (As seen in the picture.)First, the light patterns are plentiful and there's enough that meet your liking. Unfortunately, and I don't know if this is due to not enough power coming into the brake wire or that the lights are faulty, but when I set both lights to the same pattern and wrap up the wiring, upon restarting the motorcycle there is always the one light that goes BACK to the default pattern while the other remains. I tried another light install to see if it was just that one light that was faulty...nope! The third light also.I have both lights running off the same wire. I have no problems with the first light keeping it's pattern selected but the second 2 lights installed both went back to default (pattern #1).As for the brightness...I think if the background was blacked out they might be a little brighter. But because of the shiny silver background these lights seem somewhat dim. Not enough to where it's almost "unseeable" but in daytime - forget about it! Just not bright enough.These lights are probably better used on a car somewhere but for a rear motorcycle brake light add-on, I'd suggest going with something more expensive like the Wicked Strobes.This instruction says yellow to Black, similar for sale says yellow to red to change pattern, Which is correct???Not Police bright, but ok for trail riding in daytime and getting noticed at night.Only pattern all 4 returned to was L3double then R3double flash....yellow wire switching patterns unreliable-even tried separate wire back to battery ground=still not switching as advertised. SAD mounted one-not pattern wanted. Ok for Emerg alert.Good, base was solid aluminum:)