I am sure the operation is close to the Traeger or if lucky the Ortech.
If you post a picture of it I might be able to give you some help if you would like.
As you can see by the pictureI do have a little experience with these controllers.
I picked one up on craigslist for $175. the controller was bad (same as the one front right if savannah's pic) it is two piece and the knob display connect to the main board. I had a spare traeger controller and was able to wire to it. Must say i would reconsider the Molex, it was a steep learning curve for me.
I had thought aboud selling it, but for what i have in it i am glad to have an overflow. even if i only use it once and a while.
dont want to get into the USA talk, but i like the mobility of it. the big cast iron casters on one end work well on my gravel drive