I have a 1989 Jeep Wagoner Limited (XJ version basically a cherokee sport) that is having problems starting. I don't have any power at the ignition switch. I replaced the starter relay and a fusible link and reset the ECU. After resetting the ECU it started after 25 minutes. It started and ran good for about an hour and died again. I unhooked the battery and hooked it back up again resetting the ECU again and after 25 minutes had power at the ignition for a minute then nothing again. I have power everywhere but the ignition switch. Any ideas?