Look for 4 connections on the control panel, all next to each other, T A D B.
There is a factory fitted link across T & A, this is the bell box tamper circuit.
D & D is the bell/siren output.
T is the tamper return connection.
A is the negative siren connection.
D is the 13volt supply to the siren.
B is a switched negative trigger to the siren.
Connect "T" to the siren tamper, usually marked "TR", (some siren units have 2 options, you want to use the -ve if this is the case).
Connect "A" to -ve hold off, (when in use, there is a negative circuit between "T" & "A"), remove the link at the control panel.
Connect "D" to +ve hold off.
Connect "B" to trig(ger) at the siren.
The "A" & "D" connections supply the siren unit, "T" is a signal connection which should be at 0volts, otherwise a tamper fault will exist. "B" is normally at 13.6 volts, until an alarm condition occurs when it is switched to 0volts, providing a negative for the siren's sounder to work.
I do not wire the strobe seperately, because an alarm that has been "set off" and not reset would be advertised to a potential thief as such by a silent siren unit with a flashing strobe.
good luck
MikeP
