I believe it is in the trunk / hatch area , just on the other side of the tail lights ,
covered by an oval shaped rubber plug
No it is not, You will have to remove the fuel pump relay are fuse. Only ford had a INERTIA switch.
According to the wiring diagram, there is no inertia switch. There is only a relay switch in a 1991 Isuzu Trooper.
On my 1991 , it was in the trunk , just on the other side of the taillight area , covered by an oval shaped rubber plug
No, it does not.
It's in the trunk / hatch area , covered by an oval shaped rubber plug , at the back near the tail lights
No, it does not.
I'm not a mechanic / technician but check in the trunk / hatch area between the taillights . See if there is an oval shaped rubber plug . The fuel pump shut off switch ( inertia switch ) was located there on my 1991 Ford Mustang behind the rubber plug
Plymouth does not use inertia/reset switches
None
If I remember correctly , in my 1991 5.0 L - LX , it was in the trunk area , just on the other side of the taillight area , covered by an oval shaped rubber plug
might be in the trunk behind a panel
If I remember correctly , on my 1991 LX 5.0 L it was in the rear of the trunk under a removable rubber " plug " , your 1993 should be the same