Sevcon Gen4 Wiring Diagram. This sevcon gen4 8035 controller accepts 72 v to 80 v voltages. Pump controller (49 pages) controller sevcon mos 90 manual. Sevcon Millipak Controller Wiring Diagram 2009104426 from wiringall.com · #5 · apr 25, 2022 (edited) okay, so the next thing i'd suggest is unplugging the 35 pin connector from the […]