If you tee'd off the small BPV hose, you already tee'd off the FPR hose.

 

while both hoses lead directly back to the intake manifold (and therefore have the same pressure), the BPV hose is not the FPR hose.

the factory FPR hose is VERY short, and in the passenger's side front of the engine. i believe that it plumbs into the manifold at the #1 intake runner. iirc, the BOV hose plumbs into underside of the plenum.

ken

 

This is your FPR. The FPR vac line comes out of the top of the FPR and into the intake manifold. As Ken said, it is very short.

That being said, I would NOT recommend connecting anything to this line. This line is how the FPR senses boost and raises fuel pressure accordingly. Breaking the line to add a tee could produce a leak which might cause critical fuel pressure loss during a high boost situation.

Tapping in at the BOV line will work fine. This is how most people tap their EBC's and boost gauges.

As far as ignition power source (I assume you mean power only when the key is turned), you can pick several at the interior fuse box.