peugeot 306 rhd diesel 1993 - alarm and indicator system not working - jeffery

My car's indicators have stopped working. I live inFrance and drive a RHD vehicle which is fitted with a standard alarm system (unlike the LHD version). My French garagist mechanic can't find a way to disarm the alarm system in order to replace the flasher unit. Is it possible to download a wiring diagram for this car? Has anybody else had a similar problem?

Jeffery