I checked the bulbs and sockets, and they work fine. There is no power going to that line. Meanwhile, the brakes and ALL other marker lights are OK. Fuses are also OK. Not sure when the problem started but I replaced the spark plugs a few months ago...is there a terminal for those lights that I may have gooned up during that maintenance? I have no idea where that lead re-appears from the right side under-seat harness for trouble-shooting. Any suggestions?