I got a Sigma Alarm from
and want to use the alarm only as I'm happy not to get involved with the on-board immobilizer ..
Now it comes with no wiring diagram at all , but ive got most of it worked out ..
Orange ad blue Indicator , Red/black power Yellow ignition on positive..
Now Im left with a few wires , Brown , Grey, black (from siren) block, Green (with black stripe) and a Purple ..
Now from what I gather some are for bonnet and door switches , and I would assume a couple are for C/locking and immobilizer .
I've wired it up with a 12v PSU and its arms I get flashing indicators , well a bulb meanwhile ..
But then off it goes , now I'm sure its because the door and bonnet switch need to e in-line when armed and the CPU things the doors and bonnet are open and thus sounds the alarm ..
From what I cant muster up on the net I would be lead to believe that the brown and grey are door ad bonnet , but Im stuck, any help would be brill ...
Thanks in advance Dave