... the original one. The product adopts the wide output power switch, high-speed AMP7 main control Chips, integrated Circuits, can ... : Connect the oil pump adjusting speed device through the cables along with test EDC itself, Open the power switch, then open RED4 ... and down through the arrow ↑ ↓. Close the RED4 POWER switch, oil pump power off. Press Select button, indicator lamp light, and press ...