Two problems related to trunk wiring have been reported for the 1997 Jeep Grand Cherokee. The most recently reported issues are listed below.
The wire harness that runs on the underside of the vehicle is routed above the transmission case, and is directly under a screw that has the point exposed to the wire harness. When turning left or hitting large bumps, a fuse blows, which causes the engine to stop running, resulting in loss of control. It is in such a place that you cannot see the screw, but can feel it with your finger. The wire that shorted for me was the heater for the O2 sensor. There are many wires in the harness and could short any different one. This could be avoid by rerouting the wire harness away from exposed sharp screws.
No summary.