VT negative triggered horn relay wire?

[sxc_sound]

Hey guys, I have an aftermarket alarm fitted but im not liking the volume of the siren that came with it. The siren is a battery back up.

So my theory is. Link it to the horns aswell. So its loud as f*** but if the battery is removed, the backup siren will still be going.

Looking at my workshop manual didn't help in the slightest, the wiring diagram is confusing as hell. Does anyone know what colour/where abouts the trigger wire for the horn relay is?

[axemurderer101]

under the relay lol or you could find the wire under the dash going to the steering wheel, just use a test light to probe each wire until you hear the horn.

do not probe any wiring which is in a yellow wiring harness as this is the airbag wiring.

[sxc_sound]

obviously under the fuse lol, i was hoping someone might know the wire colour as its a bit hard to get behind the fuse/relay box to check wires. il be trying to tap into it closer to the steering wheel end