I bought these to clean the lights on my motorbike. The different colors are not marked but the 5 different ribbon bundles are easy to spot. They are extremely easy to connect: red (+12 V), black (- ground). The lamps are visible from nearly 180 degrees, but they are brightest when viewed directly; this. They're fairly focused, so pay attention to how they're intended for your application, otherwise they might be too bright when viewed directly.
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