Rear indicator not working

So as the title says my rear passenger side indicator isn't working. I tried replacing the lamp tonight to find nothing wrong with it, but put a new one on anyway, didn't help. Battled to get to the 30A fuse - hidden away because of a retarded Renault design, knowing full well it wasn't that as the others were working - to find nothing amiss. Pissed about trying to bend the postive pin up, and with hazard lights on tried moving the lamp around to see if the lamp holder was playing up. As far as I can surmise it must be either a burnt out/broken wire or a completely kaput lamp holder. Don't have a multimeter to check, unfortunately. Being an electrician you'd think I would know the answer ha! Just wondered if there was anything else I could check, a common problem somewhere or a hidden fuse for the particular lamp.

Thanks in advance
 
Check the wiring connector too. That caused a tonne of issues for one of my headlamp units (loose pin within the connector itself)