Pulled the dash pad to fix the instrument panel illumination bulbs and to install new speakers. Two of the bulbs seem to be getting 12 volts on both terminals of the printed circuit they connect to, instead of 12v on one pad and ground on the other. I am planning to add a ground so I can use the existing bulb socket. The new speakers are too tall, with the large magnets and the spacer to get them to clear the center tweeter, so I had to make new brackets for them from sheet metal. Time will tell if they will work out once the dash is put back together.