JRA
Welcome to the best Forum on the net. I have RTV 1100 that I equipped with several interior lights. All LEDs. I used the color red, to help preserve night vision. Two LED's are mounted up under the dash- lights up the floor area to assist getting in/out. Another light is on the interior roof. Small LEDs don't draw much current. Add switches with inline fuses. Keep in mind all that glass wiil reflect any visible light units and could be distracting. Duct tape your lights where you think you want them before mounting them permanently . Also, don't drill ANY holes in the roll bar structure.
Welcome again and good luck.
Keifef