----My problem now is....it wont start. As soon as I turn on the ignition..the check engine light starts flashing and never stops.----
Well, assuming the Howell ECM is based on a GM unit (one should never assume

), when you turn on the ign, but before you go to start, two things happen: One, the fuel pump will run for approximately 3 sec, then shut off (this primes the fuel system), and two, the SES light will come on and stay lite until you start the engine. These are the first indicators that all is well with the ECM and wiring. The flashing SES tells me you either have a wiring problem, or a bad ECM, or the EPROM has a bent, or missing connection--they are very fragile, and it's easy to bend a contact while inserting them. Also, improper handling will kill them (static electricity).
Are the flashes constant, IE flash, flash, flash, etc, etc, about 2xsec? Or are they varying, like flash, flash, pause flash, with this, or similar pattern repeated? If you short the ALDL pins A to B, the ECM will go into diagnostic mode, and the SES will flash stored codes. Since pin A is ground, grounding pin B will do the same thing as connecting A to B; however, the engine will start in diagnostic mode. Under this circumstance, the SES now becomes a "rich/Lean" indicator (once in closed loop).
In order for the injectors to fire, the ECM must recieve a signal from the Ign module, telling the ECM that the engine is turning over; this also causes the fuel pump to start running again.