I have lost voltage to my power windows on a 1965 T-Bird. I have power going thru the circuit breaker and according to my manual the next thing to check is the 'power window relay', my problem is that I have no idea where that relay is located. Can anyone tell me where it is?

Thank you,
OldTracker

Check the upper center of the firewall.

Once you locate the relay, you can jumper out the two wires from the relay contact, usually the heavier of the wires, they may be red and yellow in color, and see if the windows operate with the wires jumpered. If they work then that is the problem. The relay allows the windows to work only when the key in in the "on" or "acc." position. If that is not important to you, and the windows work with the jumper installed, just leave the jumper in and use it that way until you replace the relay. There is a wiring diagram on this site for the window circuit but it is for a 1960 T-Bird, but I suspect it is similar for a "66.