Hey I wanted to thank everyone for their input on this particular topic. I ended up buying the surge suppressor (Automation Direct calls it a "transorb module") that Keithkyll suggested. I installed it yesterday, and it worked! So thank you thank you thank you. I had a follow-up question that I would appreciate some input on now. I certainly learned the hard way about surge protection from inductive loads... but moving forward, how would I spec out the appropriate sized diode for this type of situation in the future? What specs do I need to gather from the inductive devices and what specs do I need to look at in the diodes to ensure I'm designing a good system?