Sorry, but I'm totally confused.  I'd be very grateful if you could possibly edit the picture above and do two new arrows pointing towards where you want me to connect the wires.

 

Bell and 12v

3 hours ago, james.wilson said:

 

Bell and 12v

 

So 12v = Red & Bell = Black?

Yup, as per my previous post chap.

1 minute ago, Rulland said:

Yup, as per my previous post chap.

 

Sorry rulland as I didn't notice your previous post.  Thank you again.  I shall try this first thing in the morning.

 

Is it safe for me to disconnect and reconnect whilst the unit is still powered or would I need to power everything down? 

Safe as long as you don't put stuff in the wrong hole lol.

Lol.  I'll try not to.  I'll let you know how I get on mate.

 

Thanks again to everyone.

No probs mate.

Evening.

 

Unfortunately the SB didn't work with the suggestions made.  Whenever I connected the black wire to the bell, it continued to beep.  I then tried 0v, the aux, the -, but connecting to any of these meant the SB just continued beeping non-stop.  The only solution was to plug the black wire into the Speaker - and this stopped it.  Now it only sounds whenever I do a speaker test or when the alarm actually triggers

 Means your bell is already zero , did you change the bell trigger polarity by mistake at some point as they are normally switch  negative by default