i am a cheap ahs, i admit it. i went to walmart, to their auto section, and bought two halogen lights (mid sized) for $15, a cigarette lighter wire extension for $6, came home. had one of those metal '3"' capacity heavy spring clamps; opened a hole in it; put the halogen light bolt through the hole, tightened it up. cut off the female end. put crimp on connectors on the 'cig plug', and , and clamped the thing to my rops; works like a charm; i can swivel it anywhere i want it', horizontal or vertical (the clamp will swivel on the rops, and has plastic spuds on the ends). used it toni8ght to 'steal dirt' from a high spot to fill a raised tomato bed. and i have a spare, since the $15 included two....
don't need it all the time; clamp it to a large metal shelf in the shop that has tractor odds and ends on it...
reb
reb