I have an 1986 pontiac bonneville and it keeps blowing fuses. on 1990 Pontiac Bonneville

In the 1986 bonneville it has no front or rear running lights and keeps blowing the fuse for it as soon as you turn on the lights. The headlights, turn signals, and four ways all work. I have checked the illumination wire like someone told me to and that is fine. Any help?

Asked by for the 1990 Pontiac Bonneville
dead short to ground,seek a diag and est