Mark IX horn relay

Can anyone tell me where the horn relay is located on a MK IX?

I’m pretty sure there isn’t one.

Every Jag I’ve ever worked on has had a horn relay. For the significant amount of power the horns draw I would think there had to be a relay somewhere

Just checked my MK9 wiring diagram. Definitely no horn relay fitted. Horn button takes full current.

XK150 and Mark 1 don’t have one either. The HF high frequency horns apparently don’t need it like the old Windtones did.