Hi Guys, many thanks to those that have replied, ive looked at some of the systems suggested, the Canadian one looks nice but carries a heavy cost, its more expensive the the complete kit, ha ha.
Yes ive spoken to Action, but come up against a solid rock there too....the tug horn modules are awaiting a "build session", same as they were 2 years ago, but more importantly, for those out there who have a "noisey thing"....look after it, as even if yu did accidentally damage it, they may no longer be able to repair, as apparently 2 important components are no longer made, which means a complete redesign of the circuit board. So thats not going to happen too quickly. yes i can and have ordered a smalle engine sound board from them, but still trying to source a "horn", the old Admiralty electronics ones used to be reliable, but again seen defunct now and not advertised....shame.