I need some help properly wiring the power transistor that goes under the ignition coil as the previous owner altered the OEM wiring. I'm mainly wondering if this transistor is NPN or PNP and where each of the 4 wires attaches so that the coil can properly receive the spark signal, we've narrowed down the no spark issue to this section, as the rest of the components are in proper working order. All that I can see is the two pins that hook up to the plug on the black box and the two transistor legs on the underside. I made a wanted post for a bracket but we just want to get the car started to find any other potential issues. TIA

Can`t help w/the wiring but IIRC,the transistor is a FET or 2 in one package.

Make sure the bracket is well grounded.No spark or tach w/o being well grounded.