Quick question,,,Lambda probe heater fuse

My dashboard clock stopped working. I located the burned out fuse for the Lambda Sondenheizung and replaced it. The clock now works again. What strikes me as peculiar is why the clock would be on that particular fuse? Or has somebody messed around with the wires (previous owner perhaps)?

Sorry, I dont have a owners manual for the car,,which brings me to the next question, where can i obtain one? (3.6L 1989-90)

Thank you for your answers