I plan on upgrading the horn setup in my 1987 Mercury Cougar to a Cadillac style trumpet. Only thing is I can't decide on the early ones with an actual trumpet or the later 4 clamshell styles used until 1997.

So many variations.....

The 4 notes are A,C,D, and F

The thing is that the C can be either high or low and in the 1964 Eldorado convertible it was a B flat instead. The trumpet for that one was over 2 feet long and had to be mounted in front of the radiator.

Some other versions were your basic high/low horn with a smaller trumpet for a total of 3 notes from what I'm reading/researching.....