Installed step-up transformer to drive the LED lightbars at 28V, rated at 40a - turned it on and burnt the retinas out of my eyeballs - very very bright! No, I don't have before and after shots, but turned on with 28V in half bright sunlight the garage insides simply washed out to white. Will see how they last and what effect they have on other road users or when using in the bush - probably overkill. in close quarters.