old sign lighting

[nashvillesigns]

hello and thank you in advance!
does anybody know where i can get parts for these outdoor rated lamps? There is no manufacturer name anywhere in these friggin things.
mr. Mosher

 

[Billct2]

Do you have too? I'd try to replace with new, more efficient and less corroded units.
But if you must- a good commercial electric supply house would know if parts are available.