i have changed the light switch but this did not help can any one give me advice as to what it could be.

les hunnings, January 2008

check for BLOWN fuses test bulb operation, try checking the relay that supplies the headlights power ,that little switch cannot supply the CURRENT that is needed HENCE THE RELAY
fuses OK, Bulbs OK Relay ? Good one will click when u turn on/or off the circuit with your fingers holding the casing u will feel it as the contacts energise . (SAFE TO HOLD AS ONLY 12V) no click replace rely

wirecutterman, January 2008

The headlamps are controlled by a relay - usually around the fuse box area. Guess thats the fault if they are both off.

John, January 2008