1965 Dodge Dart Charger

I looked at the 6 spare horns - 3 Hi 3 Lo (all working) I have and 3 have the 90 degree bracket and 3 have the same as you showed. I went back to see where the date code was on the brackets but couldn't seem to find where it. So where would I look for the bracket date code?

There is no date code on the bracket. Just the horn. On the backside you can see the date code. See previous photo. What I have found out is that 65 has the ones as I needed. For 64 they some kind of "S" shape on the bracket.