Turn signals don't work

Dad n I discovered while going thru electrical agony, that there was some mid year changes with electrical.
Here is a couple links with schematics, but yours may be different than these due to mid year changes.
http://www.mymopar.com/downloads/1967/67BarracudaA.jpg
http://www.mymopar.com/downloads/1967/67BarracudaB.jpg