Read all of this thread I have linked.
It will tell you how to eliminate the priority "feature" on your magnum.
It will not effect the flow control at all.
You can hook up what you want, where you want.
I did it on both a 7150 and 8940 with 100% satisfaction.
John
https://talk.newagtalk.com/forums/thread-view.asp?tid=156755&mid=1124952#M1124952
Jd 1770 vac planter on 7140 magnum won't lift or lower!
