Need location of rear defogger switch for a 67 Barracuda

I've got the switch and rear defogger to install in my 1967 Barracuda notchback. It was a factory option. But I don't know where the switch was located. Will someone post a picture of the factory location of the switch? The location is probably the same for a 68 or 69. If you could furnish some dimensions from the center of switch to a reference point, that would be great. Thanks.