I was going through one of my Sun test equipment cabinets & found this Delco Remy original electrical equipment booklet for GM passenger cars from 1965. It was interesting to see the trumpet horns were also offered on Chevrolet Pontiac and Buick. 

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Yep, There was a dealer installed long Eldorado horn offered on both the 1963 and 1964 Cadillac model years. The 1964 also included a short trumpet horn as standard equipment, so if you had a body style other than the 64 Eldo and bought the dealer installed optional 64 Eldo horn you ended up with a 4 horn setup. 
It took me over 20 years and 30+ parts cars to finally find a 64 with the correct "896 64 Eldo horns". It is now on my 64 and has the standard Hi and Lo note horns, plus the short and long trumpet horns.

For those that have  not check out our Horn help topics here are the links:


- Horns Used in 1963 & 1964 
- Horns: 1964 Standard 3 Horn Setup  
Horns: 1964 Eldorado Three Horn Setup
Horns: 1964 Four Horn Setup With Optional "896" Eldorado Horn

Jason, have you got any horns available? I have the short trumpet horn but only one of the others. I’m unsure if it’s the low or high and unsure how to tell? 

I currently only have the 64 Hi note horn. They are $50 as pulled, tested working, or $100 cleaned, bead blasted and painted to look like new condition. Of course you get 25% off as a Chapter member. You can see them by Clicking Here.  If you look inside the rim of these standard Hi and Lo Note horns with a light you will see an H or L stamped.  If you have one that isn't quite working or sounds bad there is an adjustment screw on these that if you turn one way or the other can sometimes get them working correctly again. There are placed that rebuild them but it is not cheap. If you need the Lo note horn I can add to my Wait List.

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