Ford Streetka many of lights not working after attempt to change bulb for one light.

The back light was not working but the brake light was (both controls use the same bulb). It was looked and an attempt was made to adjust the metal parts of the connector to allow the wire coming to the bulb to light it up as the usual red light. After the bulb was put back in the brake lights also stopped working as well as the front lights (still had indicators and side lights at front and the red back light on the other side). They said that there was no power getting to the fuses for the lights. Any ideas how it can be solved?