Mogegg, just read your most recent past
here which gives me a better understanding of your issue. Apologies if I didn't fully grasp the problem earlier. From your most recent description the multi-function stalk and TSM, which you have replaced anyway, seem to be operating correctly in as much as indications on instruments conform to stalk commands. Hopefully you have downloaded the parts book I linked to above which contains the wiring loom schematics. These can be difficult read but it's where I gain my info.
The headlamp main beam flash is essentially independant of the headlamp switch, has its own relay and independant power from fuse 7. As it works correctly no reason to dwell on this.
The issue now seems to point to main feed to dip/main beam relay which comprise of two blue cables, U96 to TSM and U129 from instrument connector plug. The latter is probably the feed from headlight switch, looping back to TSM at relay connector. Without power to this relay whether dip or main is selected, no power can pass through it to either headlamp beam.
Best advice I can give at present is to check the 12 way instrument connector behind dash, C31 on schematic which includes connections to headlamp switch, and whilst there check connections to that as well. Until you have power on U129 (blue cable) there is no way either headlamp will work when selected, so may be worth tracing this cable from dash connector to relay for any breaks.
Don't worry about power to fuses, they are in circuit after the fault, and as main beam works on flash no reason to assume the dip fuse is faulty either. Finally although I haven't seen mention of model year, above advise applies to early or late models.
Please advise on outcome.
