alarms..

[blaiz]

finkin bout getin a alarm wiv centrall lockin outputs for me standard SR.

says may need extra solenoid (which it will coz SR's only got 1 in passenger door coz drivers side is a switch.. but if a get anuva solenoid, will this require anuva new interface for this 2 work wiv original central lockin, or can i js hook it up 2 original or run sum sort of switch off da ova solanoid..?)
but also says can only be connected to "low neg" central locking systems.
wot does this mean??
is the standard central locking system in a SR "low neg"??

sorry if thats bit confusing.. :?

cheerz 4 ne info?help!

[gavmc18]

what kind of alarm is it. when i got my central locking in my sr done i had to get another solenoid in the driver side and it runs both doors with the one interface that was a microscan had to do the same for my toad one on my new gsi