Help! I have a 1982 300 SD. When I bought the car a year ago the reverse lights worked. Then about six months ago they suddenly stopped working. Then it would intermittently start in park but almost always needs neutral to start. Now if I install fuse #10 with the key in start position it tries to start until the fuse blows. I found if I disconnect the yellow on black with spiraling red wires the fuse doesn't blow. I can't find any thing else that is wrong. Does anybody have any experience with this type of problem?