As my plus4 already had wiring for a second horn, I presumed it was ok to add a second one without adding a relay. It’s been ok for the past 9 years. I found an identical unit with a higher tone at Holdens. It happened to be their cheapest offering at something like £9 at the time. Trust Morgan to select only the finest available!!
I also fitted a vintage style “ooh-ahh” with separate button under the dash, but did fit a diode relay for that one.
Incidentally, I use my horn fairly often when approaching blind bends on our narrow country roads to both warn oncoming traffic and possible horses or walkers. I was always taught to also sound your horn back when hearing one from others to warn them similarly of your oncoming presence. Sadly, drivers rarely seem to do that nowadays.
