Cinema grand joules meter lamp specs

[Beecher 4]

hello, I kinda fell into some Sunfire gear recently. I’ve been doing my best at using the resources available to me here on the carver site.com, but, as I’m sure you’re aware there are many similar models of most of these amps. 
my first DIY is to replace the lamp for the joules meter. I think I’ve found one on eBay, but I like to buy parts in multiples or bulk if possible. I can’t locate the specs for the lamp. I forgot to measure voltage when I had it open, and I can’t measure the milliamps at hand. 
I’ve found axial 12volt 100ma bulbs in bulk, the ones marketed towards Sunfire units are much pricier and sold singly.

any info is greatly appreciated 

thanks

Edited Thursday at 11:05 PM by Beecher