I had air horns fitted to my previous cars and would like to fit some to the Jag. I cannot see the original horns to hook into the wiring so where should they be? and accessing them?
Bob

 

The best way to find out...most car horns are installed behind the front grill, by the engine bay or underneath the front frame. Have someone hank the horn and follow the sound where it's coming from. Be careful, if dual horns are installed in your Jag, it will be very loud...protect your ears

 

Left side front wheel arch cover, forward, just below the Air Compressor; you will need to disconnect the wheel arch cover from the radiator splash underbody panel as well.

 

I find the stock horns to be quite capable of signaling my intent or warning others of lane drift. I mostly use them to say 'hello' to the neighbors.

 

Installed them on my motorcycles years ago.
Come with a relay, draw a LOT of current, & are LOUD!!!!!!!!!!.
Seem to get peoples attention way better, than the stock horns do.

 

Fully agree on MC usage. When I rode from 1969 to 2014 I came too close to being a hood ornament for many a dump truck or 4-wheeler. Miss those days. Not the precarious 500lb. vs 4500lb. mass differences, though.