Calling all you electrical boffins!

[Judderi]

Ah i get what your saying now. I had no idea the main bulbs were lit a little when just on sidelights. I think your right also about other affected wires. Because if this wire was the only faulty one surely i would just have a problem with my lights. There were 3 or 4 blown fuses which i have replaced but still have no joy. I think i may have lost power to part of the fuseboard. One other question. Just before the burnt out wire connects to the fuseboard it splits into 2 and the other half goes to a plug consisting of 3 wires on top of the steering columb. any ideas what this bit on the steering columb does?

[mjamoose]

It's most likley to be the connector for the switch, delivering full voltage to the headlights or full voltage to the resistor, where it is stepped down to about 6-8V, as the lights are now controlled from relays on the original loom and  I wouldn't worry too much about those wires.  Hope this helps ya!

[tobz.]

Oops looks like I was completely wrong about that resistor, all these years I've believed it to be something to do with the heater. Ah well you learn something everyday.

[Judderi]

Cheers anyway.