Hi All, I've been researching / planning a control box build after being inspired by "The Electric Brewery" but with a few changes for a 2 vessel HERMS system. The plan is to have 2 vessels (BK/HLT and MT) with elements in just the BK and heat being exchanged via a CFC. I plan to use 1 EZBoil timer (probe in BK), 1 Mash PID (probe in mash tun), 2 pumps for recirculation, a main element in the BK with a secondary element to be used for boosting to boil or when boiling is difficult (in the cold / wind etc). While I feel fairly confident about the build I do not feel confident with the wiring. I have taken some time to draw a thorough wiring diagram but would love some feedback from anybody who has built something like this before or who has some degree of electronic experience.