89 camaro

Ok so I drive over to my friends house. I forget something in my car so I go back, open the door. I notice the dome light doesnt come on. THen I notice My Radiator fan, dash lights, tail lights, all that stuff doesnt work. By some miracle the the car starts perfectly and the headlights still work. I checked every fuse. All is well. All the ground wires I could find look okay. Could of missed one or two. Anybody know how to fix it?