The door in your picture is identical to the door that allows access to my 50 amp power cord, except that my door is found above and to the back of the side radiator - that's about chest high on the street side and very near the rear corner of the coach, just a foot or so forward from the left rear tail light. The key is silver and says "ChicagoLock," "Made in USA," and has the number "1101X" on it.