[Wiring: Guardtec 350 to Honeywell AG6 bell box problem]

Good Day to you Gents,

In a bid to save money, I decided to repair my home alarm system and replace the exterior bell sounder. Having done a bit of research, I wired the new Honeywell AG6 Bell system up as indicated in the picture attached,  however I am now unable to set the alarm as the 350 Panel LED indicates "tamper".  Could any of you please you have a look at the wiring to see where I have gone wrong and offer any advice?  I have attached a picture of the old bell box wiring setup which I took prior to removal. On the AG6 bell I have not wired in the white

New Honeywell AG6 Wiring

Yellow   TR-

Green   S-

Red        V+

Black      V-

Blue       ST-

White    Not Connected

 

Old Bell system Wiring  

Yellow   12V-

Green   F TMP Feed

Red        12V+

Black      S- Bell SW-

Blue       Strobe -

White    Strobe +