I was out in van at night, operated rocker switch to dip....
no lights,side yes flash yes(so not a bulb fail) main yes.indicators fine
Got near home on main when that went too, had to buy and wire in aftermarket off/on/on
switch which I thought would sort it as I suspected the rocker switch was at fault.
No...same problem swapped side and main round still no dip/main,had a play with fuses and fusebox,no change so it's got to be the dreaded column switch?