These are good working lights at a good price. They are not easy to install. Each light has to be connected to the wire with two individual bare wires. There are no easy connectors. As to longevity, I've bought three sets of these over 2 years. I've added a few, replaced a couple, but I'm generally happy with the light itself. The biggest longevity problem is that the metal bracket that holds them up rusts out in a year. I've been just taking them off and setting the light in a two inch diameter piece of PVC pipe painted black and cut to length. This works well and lasts.
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