Ok, yesterday me and my budy tried hooking up a MSD street fire ignition box to complete my system on my 95 GT(distributer, coil, plugs and wires). We followed the diagram, hooked everything up, checked and rechecked our conections but when I went to start it up it would crank and fire for a second then the box shuts down, IE the led light goes of and the engine goes back to cranking. We spend two hours trying to figure it out but could get it to work. I have it hooked up for a TFI coil setup, our tach wire is T spliced into the wire coming of the ignition control module and were not useing the magnetic conector of the distributor IE the diagram. Any help or insight would be great.