I am a firefighter and bought these to fit in the windows of the two rear doors of a car. I bought this https://www.amazon.com/gp/aw/d/B07HRSCXTZ?psc=1&ref=ppx_pop_mob_b_asin_title. I've attached lights to these mounts and they work fine, lights from the same manufacturer as the mount will probably work better. The only criticism is that the suction cups are not very tight and can fall out.
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