I'm working on a friend's 1971 Road Runner and none of the rear tail, turn, brake or flashers are working. I also have an issue with the front running/turn signal lights staying on whenever the battery is connected. The smallest filment in the bulb stays lit on both front running/turn signal lights. In addition, the headlights work (low beam and high beam), but the headlights are dimmer than they should be. I've checked the fuse box and power is making it to all of the fuses there just fine. Does anyone know where I can find the factory wiring diagrams to download for this car and logical things to check to resolve this problem?