Originally Posted by V.Rossi
So the relay that is there but not complete, should that not be a worry, surely peugeot wouldn't have fitted it if it wasn't for something?
Any idea where the earth points would be? Would they be coming off the alarm somewhere or some random place on the loom?
Looking at your picture, the socket is there but not the relay. The relay itself is a small square box which unplugs. A Haynes manual will tell you what they're all for.
Don't forget there's also a relay and fuse box under the bonnet, although these are mainly for lights and starting. But it doesn't hurt to check it.
The main earth points is just under the battery tray. Disconnect the battery, remove the tray and clean up the earth point. It should only be a 20 minute job but will make a huge difference to starting and running, and also be good preventative maintenance for the winter.
If you're still having probs my bro is well versed on 306's and is working on one as I type. He's down Attercliffe and will probably be able to help.