thanks for all the responses, everybody. I will definitely look for one specifically for g gauge

Hi all. Wondering if I can make use of the expertise here.

I picked up a g gauge set recently but it is missing the power pack.  I see some on eBay for ho or n gauge. Will those work or is it very specific?  Also would there be another place to find the right parts?  I don't see them at the Bachmann site.