Suzuki Club UK

I don't understand why only one side indicators works
I thought the fuse had gone , so no indicators would work or the reverse lights as they share a fuse.
Hazards however have there own fuse. As these work it seems they are wired correctly.

Well a diagram anyway

Indicator relay knackered hence indicators not working plus we traced the reverse lights wire back to a connector in the engine bay and it seems there should be a cable plugged into it then going to the connector on top of the gear box........can anyone point me in the right direction of what it is I need, (does it have a part name/number for instance), or any drawings I can find it on, better still does anyone have one for sale. cheers.