The wiring of an Auto End pump with an Engel BTS is the same like wiring it with a BTS by Norbert Brüggen. The following photos should help you
especially if you're not too good in reading a wiring diagram. Please don't only rely on those photos as we won't pay for any damage caused by misunderstandings or anything else.
The photos show an Auto Trim Pump by Engel, please ignore the third microswitch. The wire colors of my pump do
not match with the colors of the wiring diagram so I wrote the colors of the diagram in words. If the pump does not work as it should do
with that wiring it is most possible that the two wires to the motor positive and negative are changed. The water pressure switch is not shown here.
Piston switch side:
Tappet Switch Side:
Pump Wiring Diagram with Engel BTS or Servo-Microswitch Unit:
