I recently acquired a 1970 Cadillac Sedan deVille from the original owner with 65,000 miles. When I took delivery, there are accessories that are inoperable. The radio, Rear DeFog, The trunk release from the glove box releases however the pull down action isn't working. Also, when I open the drivers door the courtesy lights on that door only work. When I open the other three doors all lights work except the interior lights on the inside sail panels in the rear compartment. Do you have any ideas of what could cause this?