corsa ecoflex
when i bought my 172 it has had an aftermarket alarm/immobiliser proffesionally fitted(have cert)..the problem is its a clifford and i dont have the manual for it and have a problem with it i think..When i unlock it with the blip i get in the car and start the engine but as soon as i do the doors lock..also if i sit in the car with the key in the ignition without the engine running the car will alarm itself after about 30 secs...is this right or do i need to get it looked at...