I've done the same, they power trunk setup is fairly generic. I pulled one out of a 79 Cordoba and put it in my 72 Dart, the button was in the glovebox.
When I added one to my 87 Diplomat it came out of a similar year 5th Ave, button in the glove box. Got one out of another 5th Ave for my 65 Cuda, guess where the button is? Yep, glovebox.
Maybe yours goes in the glove box.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
