Wiring horn

[GTSBoy]

Horns always work with the ignition off.

You should have a fuse in the line feeding both sides of the relay.

[drifter17a]

There is a 10 amp fuse

 

My question is, if for whatever reason the ground that is short circuited then will it sound the horn until battery is drained or somehow fuse will blow. I think it is the first case as the fuse is 10amp and horn pulls way less so it will work and work until battery is dead

 

my setup is, 30 and 85 are joined and then fused to the battery on 10 amp

[GTSBoy]

Why would you worry about it when no car manufacturer does?

[drifter17a]

Well here is the story

 

my cheap boss kit broke which had a brass at the back, i bought a hkb boss but there is no brass/copper at the back so i have ran the wire inside of the boss hole and checked the wire has clearence to turn from side to side however if wire is snapped then ground could be short and hence horn going off

[KiwiRS4T]

It is theoretically possible but most unlikely that the wire will break and short out in the middle of the night. It is more likely to break while you are driving it and you can do something about it.  You should be more worried about Brexit and Global climate change.