Ray, I have an ample supply of #51 Bayonet Bulbs in stock. In terms of Dow Key Coaxial Relays, I currently have the following units in stock: DK60-G2C (110VDC) DK60-G2C (6VDC) DK2-60B (12VDC) All units are rated @1000 Watts and have Auxiliary contacts. Please let me know if your still interested. Thanks! Bob Gilmartin