You will see in the foreground, that there is two hookups here. These are all for the water softener. As you know, softeners need recharging. Due to the size of this water softener, we thought it necessary to again externally mount the attachments. One inlet is for priming the water softener, and the other is for recharging it. Thus, you don’t have to take the cylinder out of the vehicle to recharge it! You will also notice the large underbody LPG tank. We can run all of our PowerClean machines on LPG if requested and still maintain fully warranties.