I have a 2003 Mustang Mach 1 (manual transmission) and recently the reverse lights stopped working. They were working about a month ago and suddenly they both just stopped. The back up light switch on the transmission was replaced with a known good one, the bulbs are good, the ground is good and all the fuses under the hood are good. I did a voltage check and am not getting any power to the lights. Does anyone have a wiring diagram or know where the power comes from or maybe had an issue like this before?

Thanks
Ted