I have found that you just have to really take your time, think things out, and show these old jeeps alotta love when you go changin things around. too many new things too soon kinda gets em comfused. After installing the blazer motor, heater core, new solenoid, alternator, ignition switch, and many hours of head scratching I think we're on the road to recovery. I have also found that ground is so important in the electrical system and terrible in jeeps. I still won't have a working gas gauge but hey, I ain't gonna try to fix it now, just enjoy the jeep again!