The bottom of the wastegate should go to either the compressor housing or some other source of vac/boost. The top should go to the boost controller since it is an electronic one. If its a manual boost controller it would just got in line with the hose coming of the bottom of the wastegate. If i am not mistaken tho you will need another vac/boost source for the controller also. From there it is just some wiring.

1999 Cougar V6 MTX SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit