Maybe I missed it in previous posts, but the one thing I would certainly advise to have...is a strong interior light(s) that you can turn on & off.
My cart has an AM/FM disc player, but what I find myself using the most is the strong directionally adjustable spot lights...that are attached to the bottom of the music unit.
With the darkness of winter, they are indispensable in finding dropped keys or just wanting to read something quickly.
I realize that there are a plethora of flashlight apps for smart phones, but they are not nearly as easily used and/or as bright...as the two lights inside my cart.
