Hi Joni, Welcome to the site. What year is you Boler
and what model?
I have a 79 - 1300 that was functional when I got it 20+ years ago but have done quite a bit of work on it since.
The best thing I did was rewire the whole thing from front to back 12V and 110V
It took me a few days but every thing worked out fine and now if there is an electrical
problem I can trace the problem by color wire not the way it was where previous owner just patched any color to any color.
most important thing is.... get it so you can use it now and USE it,,, It's not all work.