Diagnostic Aids
WARNING: This page is about a different car, the 2000 Isuzu Hombre. However, it is still accessible from the selected car via links, so may be relevant.
An intermittent may be caused by poor connection, rubbed-through wire insulation or a wire broken inside the insulation. If electrical interference is suspected, install additional ground wire between Instrument Panel Cluster (IPC) and negative side of battery.