Link a Model line to a detail line

[Camilo_Reinales_5TUW6MUD3VN2]

Hello, 
I am having an issue where I need a line to show above everything in a view, but the family I am using uses a model line, (Its a CODE Measure line for a Code Analysis Fire Safety Plan)
Is there a way to either:
        1. Have a Live link between a Detail Line where they both move at the same time when either is modified

or 

       2. Have a Detail line added to this family, so I can control/arrange the line so it displays on top of everything else                  (Crosses walls and modeled elements on a view)

[syman2000]

Why not create a line base family that will show both model line and detail line? See attached

[Camilo_Reinales_5TUW6MUD3VN2]

I believe I have a line base family, but when used in the model, it visually goes under modeled items.

[syman2000]

You have to add projection line

Afterward you can control where the line exist base on the projection height

[Alfredo_Medina]

Maybe you can draw some reference planes, so that you can see them in every view at the same position, and then align and lock lines to those reference planes.