Dreamer 7 Posted September 20, 2018 We have a 3.9 4BT cummins engine with a 5.9 cummins engine sensor installed in the bell housing. The Mack Tac goes right around to 6 o'clock position extremely fast when it starts up and pins itself at the 6 o'clock position. The electric Mack Tac # is CE17MT4117M and it has a 6 pin connector on the back. Should this be able to hook up to the 5.9 sensor and operate correctly? If anyone has a wiring diagram I would appreciate it. Share this post Link to post Share on other sites
