it's actually quite a neat little system I think
the hazard switch is where all the power is switched, hence KTS' question --- in the 'off' position power is directed to the indicator stalk for normal use (but that only works with ignition on). in the 'on' position it diverts to the hazards which works permanently regardless of ignition position (obviously a fail safe feature)
so if you have no hazards, check that switch and start tracing backwards from there (have you got 12v at PO, is that fuse ok, if that's all good you might have a duff switch or connector issue)
if you DO have hazards then 2 of the possibilities are.... indicator relay (you've replaced that but that doesn't always rule it out of course..) or the indicator stalk itself which is where I had a problem on mine. if LGW has 12v with the ignition on, then check for 12v on the other side GR and GW when using the indicator left or right . if no 12v there, then it may be the stalk
if LGW doesn't have 12v, then the fault is further back. I'm guessing that's why Bpirie is asking about the brake switch, the next question would be (I'm guessing) do your brake lights work. if not then G may be the issue, check for 12v at point 5 (and is that fuse ok)
hopefully that helps and doesn't just confuse the hell out of you (and hopefully I'm talking about the right age of wiring diagram)
Edited by stuart bowes, 24 July 2023 - 02:28 PM.