We use a trimble ez-500 & ez-boom to control the trucount clutches on our 3650 kinze planter.  When we plant and you turn around to go another direction and you turn where you've already planted there's no trouble, but if you turn around where you have'nt planted yet the 500 will color it on the mapping screen and think you've planted that part of the field already. When you  come around to actually plant that part of the field if you don't flip the ez-boom to manual the 500 will start to shut the trucount clutches off, thus you don't plant anything there and it leaves a skip.  Does trimble offer any kind of switch or something tied into the hydraulic lever that when you raise and lower the planter, it tells the 500 the planters raised no matter were I drive we are not planting.  Just a little aggrivating,  especially when this happens along the road.  If there is something, would there possible be a part # so I make sure the right part is ordered.  Thanks Eric