Wow... we have the same exact tub! For the exact same price. We were missing a heater, but purchased one from here, and called Babcock, had Don come out and he hooked it all up, and we are heated! We are having another issue with the thermostat, so we were going to just put it on the timer instead of Auto, but I don't know how to set it. You'd think it would be easy.
My husband said to tell you that the thermal couple (?) wires have to be insulated, and Don did that as well.
If you are interested in having Don or someone he recommends, please call him at 517-484-8100. I'm unsure if he will travel to Clinton Township/County, but we are in Ingham, so since you are close, he may! He is WAAAAYYY more reasonably priced that some that we have called.
And if you have any ideas on how to set the timer, that you don't have, sorry, please feel free to let me know!