Autohelm help?

[Mikey topaz]

Need some help from you njfers...... Anyone familiar with autohelms at all? My buddy has same boat as me and is installing his autohelm.....from upstairs we got three lines going down, from downstairs helm we have four lines going across to the auto helm pump, the autohelm pump has three fittings!?then we have three lines running back to a junction block, Then then block mounted on the stern the two lines go into the sterring ram lol! My guess is one of the four lines from downstairs helm gets a 90elbow and gets tied into he upstairs helm??? Thanks in advance!

The autohelm is a cetrek autohelm even if anyone could give me a diagram to go off would be greatly appreciatted!