INST Fuse blowing

Worked on the car a little bit this afternoon. Here's what I have. With running lights on. Got a bright dimmable test light across the inst fuse slot. Checked orange wires to ground with multimeter. Dead short. Cut 1 loose. That wire dead short to ground. Check the other orange wire, short to ground. Checked tan wire with test light to ground bright light.

Pondered it for a little bit went back to check voltage on tan wire. Nothing. Scratch my head. Ask my son if we had tail lights. Nope. Check tail light fuse. Good. I said oh boy here we go. Came in to eat dinner. Haha. What do you guys think?