It's normal to have the ignition off, light switch off, and when activating the left or right turn signal lever, that side marker lights will come on. Why these cars were designed that way, who knows. Anyway, 2 days ago while filling up gas tank (under front hood), I reached inside to pull hood lever and bumped 3 fuses out of the fuse block. Of course, the cover wasn't on. I waited until I was home to put fuses back in. After putting them back in, I noticed the left side marker lights were on. I pulled fuse #5 and they went out. 12V is getting to that circuit somehow. I changed light switch, hazard switch, disconnected turn signal lever, lights still on. I have a good wiring diagram but lack the knowledge on reading it. All the grounds are good, bulbs are good, no blown fuses. I have the wiring diagram in pdf if that will help. I can send it by email but don't know how to put it on here. Thanks... Bill