Christmas tree Disco ('lecky prblem)

Afternoon folks,

I've done a search and can't seem to find any similar problem to this one -

When I have no lights on and press the brake pedal, the side lights, front and rear come on. When I put the side or headlights on, the brake lights are permanently illuminated.

I been through all of the wiring and checked the lamps/earths etc and still no joy.

Has anyone had any similar problems?

Cheers
Rob

Keep on looking...bad earth somewhere.

Have you checked the main body earth located behind the battery?
Looks like a cable clamp bolted to the inner wing.

I ended up removing the fuses to see if I could isolate the problem circuit. Turns out that the fine wires that support the filament on the O/S rear tail lamp had warped and were in contact with the uprights that hold the brake light filament so when I put on the side lights, it was feeding 12v to the other brake light. When I applied the brakes, it was feeding 12v across to the side light circuit.

It wasn't obvious that the lamp was defective as I only looked to see that both filaments were intact, it only became apparent when I isolated the circuit and caused me to again (4th time) to check the bulb.

Lesson learnt!!!!

Well done, it's sounds like an excellent bit of fault finding. :clap2: