When we got a new cart late last year, one of the headlights was waaaaay out of adjustment. It was shooting into the treetops......literally! After a little bit of noodling, it turned out to be a fairly simple thing to resolve - remove a couple of screws that hold the headlight in place then loosen the headlight bracket, adjust, tighten, then put it all back in place. Worked out fine. This was on a Yamaha cart - other brands will undoubtedly differ.
Yep, the newer halogens sure are bright. But when properly adjusted, they do a great job after dark.
Bill