My 1998 TJ Sport has very few lights (illumination lamps) on the cluster working, the brake lamp does not work, the turn signals...exterior turn signal works but not the ones on the cluster. I have checked fuses, examined wires and even traced them to their sources, all good, even bought a used instrument cluster that had the very same lights out when I installed it in my Jeep. Fuses are good, wiring good.... Is it possible the ECM is bad? Cannot get it inspected without the brake lamp in Texas...tried and they failed me.