Just want to throw in this little tidbit. 69 side markers (mine at least) have their own ground. If the brake light switch stays on and the taillamps on that side are not grounded, then the current will backfeed from the brake/turn signal element through the bulb socket into the parklamp element and to ground through the sidemarker bulb causing it to illuminate. If it were me I would start with 4 new 1157 bulbs, 2 new 194 bulbs and check for good grounds through the taillamp housings and unplug the brake lamp switch until all turn signal and taillamp issues are resolved. My car is upgraded with taillamp sockets grounded through the harness, eliminates a lot of hassels.