1978 Other Dodge Models chasis electrical problems

Electrical problem
1978 Other Dodge Models V8 Two Wheel Drive Automatic

recently picked up a 78 dodge monaco motorhome thats having a few issues. I can not get the overhead running lights to work at all. Headlights work fine as do the passenger tail lights and turn signal. Drivers side is another story- brake lights seems to be fine, but turn signals are very dim and its all 3 lights on. When ya turn the head lights on, they tend to be a bit btrighter but not much; also they wont blink when turning unless the headlights are on. I have found only 1 fuse box sitting right next to the glove box and all fuses are good as well as the 2 in-line fuses i've been able to locate. Need help