Dash lights

If turn indicators, hi beam indicator, and others do work we know the chassis ground is good. Only bulb in instrument panel that doesn't use the same inst' panel ground is the brake indicator. All illumination bulbs are on the same dimmer control and orange colored wires so we know most of that is good. Maybe the orange wire to that contact pin in circuit board is the fault, or maybe you have a few burned out bulbs, or maybe a mix of burned out bulbs and broken bulb sockets. There are several bulbs in inst' panel but only 3 or 4 serve illumination. The others operate very intermittently so they live longer. All bulbs are in the same type bulb socket that has little plastic tangs holding it connected against the board. They just break.