The Lifegard seen in Ghostbusters 2 also makes a reappearance and appears to be modified. This is one of the easier modifications to make with the game equipment. The lifegard now sits in a pouch similar to the belt gizmo. In front of the lifegard is a small circuit board. Two green nycol tubes or wires lead into the holes on the front of the unit. A red tube or wire with what appears to be a nixie tube runs into one of the speaker outlets. Additionally, the knob on the top of the lifegard is painted black rather than it’s standard yellow colour

Again, it is not necessary for you to have a lifegard when wearing a game pack.