My 1995 gypsy had bar .there was pipeline fitted 2 points one in rear ,one in middle.2 mayurjag fitted after petrol tank at rear down side.operated by wiper botel dc motor.even third door was modified to lift upside.jimney is short maybe it have same space in rear side.
Awsome video everything in detail for camping in car if u could mention all the accessories Amazon link in description and some pH no. And link of the company that build ur bed