The attached pic shows the fuse block diagram from the owners manual for a 2019 F-150. I have highlighted in yellow locations that are labeled in the manual as “not used” or “not used (spare) (Raptor)”. I am looking for a 12V ignition hot to use as a signal for a relay to turn on a device. I am planning to take a multimeter and check each of these locations to determine if any happen to have ignition switched power. Before I go freeze my balls off, has anyone located such an animal on the fuse block?