Originally Posted by Seattle66
Have stock 66 Mustang with original fuse panel. Once in a while my radio,heater, turn signals will quit working. The lights still work and no bad fuses. If I shut off the engine and restart they come back on. Any ideas?
Sounds like you are losing power from the ignition switch.
Try to find a diagram that shows the ignition switch wiring and trace the wire that energizes the fuse box.