I installed Rigid dually lights in the cavity that mount to the top side. Kind of a pain to get the plastic portion pulled out far enough to drill the the mounting hole on the top side put they work great. I have the ones with the diffusion lenses to spread the light. Here is a link to the lights:
https://www.amazon.com/gp/product/B007NKUMK8/ref=pd_sim_263_4/151-6702282-7258659?ie=UTF8&pd_rd_i=B007NKUMK8&pd_rd_r=X8NC3Y3Y1FTZKDYEH53P&pd_rd_w=tGcE0&pd_rd_wg=NR5Kc&psc=1&refRID=X8NC3Y3Y1FTZKDYEH53P
Will try to post pics soon.