The C1’s engine (124cc or 176cc) overheats quickly if the fan fails. The wiring diagram shows a thermal switch in the radiator (right side).
That’s when Maria, his neighbor, knocked. She’d overheard his cursing. “BMW C1?” she asked, peering at the open fuse box. “My dad had one. He always said the secret is in the central electronics module —the ZKE. But you need the real diagram. The one from 2001. The late production run.” bmw c1 wiring diagram
Focuses on the single-cylinder four-stroke engine, covering the starter motor, spark plugs, and fuel injection system. The C1’s engine (124cc or 176cc) overheats quickly