Bob,

Thanks very much for the reply. I'm a little embarrassed that I put you to this trouble. I did some other surfing and found out that it is M59 bulb type that matches my M135 ballast type.

I should have pursued it harder before bothering the buisy folks here. Your help is greatly appreciated.

If I can return the favor, please let me know. PLC questions maybe?

Thanks again,
Doc

Doc