Must be a earlier meta system you have because new ones you only connect 3 wires however yes you need battery (+30) & ignition (+15) as you need ignition live to prevent alarm arming with ignition on.The earth plugs straight into spare terminal space in connector.
The aerial gets its live from the alarm connector,other side is bolted down to earth.
Although these connectors are ok,if you can its best to solder.
I would assume when you switch on the alarm it operates this locking module,all my meta installation stuff is at work & I cant remember my meta installation site password
Could you scan the whole manual & PM or email it to me when you get time?
No i'm sure the m320 is just a remote upgrade to your original central locking,the alarm wire will just be to switch on the alarm (if fitted) when you remotely lock the doors.
I would wire it up as the lower diagram (http://img132.imageshack.us/my.php?image=wiringtx4.jpg) as this provides live/earth/locking & direction warning indicator confirmation.Could fit the LED as a dummy alarm.
most of the booklet is the same as the pages ive posted but in a different language. theres a page with a picture of the front and back of the fuse box and a page with a picture showing the aerial in the centre of the dash
No i'm sure the m320 is just a remote upgrade to your original central locking,the alarm wire will just be to switch on the alarm (if fitted) when you remotely lock the doors.
locking & indicators (if you want visual confirmation) plus it needs power so battery live,ignition live(+15),earth & again might aswell fit the LED,basically all as in the bottom diagram.
Indicator wiring is bit tricky as connector is at back of body computer,connector PG.