Boost Sensing Location

Hey, hows everyone doing. Ill get right down to it...where is a good boost sensing location for my Boost controller. The directions say from the side port on the Wastegate, that line goes to a "T" fitting which connects a boost sensing location and to the Boost Controller. From the BC it then goes up to the top vacuum port on top of the Wastegate. I have a Tial Wastegate btw. Anyways, wheres a good or any location for my BC to sense boost. Thanks