Yesterday when I done all the wiring I used 17amp for everything thinking it would be fine,
Basicly the way I have wired it up is exactly! The same as per the link in my 1st post...

So I guess what I need to no is what amps dose the relay pull from the battrey is that 14amps ? 7 for each horn

Also I only have a 30 amp fuse will this sufice.... Lol I thought we had hit to the bottom of this last night but enjoying the learning experience

 

Your right the relay will only draw the amount that the horns require do it shouldn't draw any more than 14/15 Amps so 15 amp fuse would be the ideal thing 20 amp would do as well if the 15 amp blows as the relay can cause the amperage to rise slightly trough resistance. But to put in a 30 amp is far to high as it is well over rated for the purpose and wiring. U wouldn't go any higher than a 20 amp fuse.
If you only have a 30 amp it will do til U can change it for a lower one in the next few days but I would change sooner rather than later just in case there's a fault that develops.
I'm sure you have covered all items and concerns that could arise from your or anybody else's install
Glad I could help!!!

 

All done, . Connected signal wire to relay put the fuse in, quick check over things and thankfully worked 1st time

Will get the fuse changed over the 15 / 20amp at the weekend or sooner.... Massive thanks to eveyone that that helped esp dockyard cheers again.

 

It's always good when things work first time!!!!
Just remember we're not in India now and y don't have to blow ur horn at everybody just to show how loud it is. ;-)))