#wiring diagram

Tech Tips:

Crankcase Heaters and Single-Pole Contactors
By:Bryan Orr We keep two-pole, 40-amp 24v coil contactors on all of our vans. They are versatile and reliable, and you can replace most residential A/C contactors with them. There are a few things to watch for, though, especially when you have a crankcase heater. Many brands power the crankcase heater constantly and shut it […]
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