Take a look where the wire harness's go under the carpet below the fuse block. You will see a black connector that goes to the rear window motors. Just above that plug you should have an orange wire (black stripe) that goes to batt (continuous 12V) in the fuse block, then the pinkish red wire goes to accessory (12v when the key is on)
I took a picture of the harness for my 68 for you.
