there is 2 relays G001 for dip beam and G002 for main beam ..and G221 for the hazards ...all relays are plugged in to the rear of the dash ..the indicator relay will be the large ecu looking box bolted on the R/H side of the dash.unfortunately it's impossible to give all positions as there where changes ,after a certain chassis number ...it may be an idea to remove the centre panel under the grill as that is where the multi plugs are kept and the corrode ..
a few items may be at fault ..check if power is getting to lights rotary switch,then check if there is power coming from the switch .again same for hazard switch ...and same for stalk switch ...also check rear of dash where relays plug in ,just in case dash has had a meltdown ..sorry i can't pin it down to 1 fault ,been that long since i have worked on a 45 series ,my memory is fading lol..if you have ant more Qs feel free to ask .also if you do find the fault let us know
cheers
norb
February 2011