Need some visual help. Have a 71 Mach 1 project car that I did not take apart. Putting back together and have all the books and diagrams for wiring but just can't seem to figure this one out. The car has all the accessories - heated rear window, power windows and the separate Mach 1 gauges in the console. I have the proper power window/heated rear window relay and harness and know that hooks into the Junction Block next to the starter relay. But what/where does the power come from? What wire hooks the junction block up to the power Supply - direct jumper from the battery? Other power source that is not "hot" all the time? I am a visual person - so does anyone have a VERY clear picture of the actual set-up - along with written explanation would be really great. Midlife has worked the harness over (both engine and dash) but wires are still hard to read colors. Have new gauge and alternator sub-harnesses. Any help would be appreciated. Live in the Charlotte, NC area so if by chance anyone has a car with the same set-up - would love to see first hand.