I have a ye olde Aristo cold light head on my Omega D2. It continues to function fine, but I read in one of the forums that these are not being made any more. What is the age of your light? It looks pretty new in the photo. It might be good to have a spare handy in case the old bulb "goes to black," as they say in TV. What kinds of electrical connections does it need. Mine uses standard two-prong into an extension cord. Does your light have the heating element?
I bought it new about 8 or 9 years ago I believe. I'm not looking at it right now, but I believe is two prong, a standard US plug, it does have the heating element in it. I haven't used it as much because I have another enlarger, I used this mainly for flash exposures when needed.