Rear lights/4WD warning light

[ChrisMk1]

Can anyone help as i'm a bit stuck on what this can be.
I have a warning light come on( left of brake bulb check on start up) when i press the brake pedal.Also when i have it depressed the front right hand side-light comes on, and the right hand rear inner tail-light too.
When i take my foot of the pedal it/they go out.

When i put the lights on the warning light comes on and stays on, also the 4WD warning light stays on.

Changed bulbs in the rear tail-lights and front side-light but still the same.

Any ideas?

Btw: 92 4x4 turbo

Chris.

[Dan Willis]

Sounds like a bad earth somewhere... maybe on the brake switch?