SOLVED: 1998 hummer h1 fuse block location - Fixya Nov 24, 20111998 hummer h1 fuse block location - Hummer H1 question. The fuel/water seperator is located under the hood, driver's side, against the firewall. 1998 h1 hummer need to know location of fuse for parking Oct 01, 20071998 h1 hummer need to know location of fuse for parking lights. - Answered by a verified Auto Mechanic Don't know if you have the manual in the glove box. Second, make sure there is not more than one location for fuses, normal locations are: on the side of the dash, can only see when the driver's door is open. under the dash.