98 k1500 5.7 starts/dies starts/dies so on so on

ok i have replaced all electrics under hood dist/ all new / ECM new remapped ./ coil new/ plugs & wires new / mass air flow new/ ect engine still acts like it is in security mode and have bypassed 3 wires on column on ign switch still wont fire correctly last time i used it ran like new to take off with it drove roughly 3 miles then did and same ol same ol start and die strt and die



QUESTION being can i run a hot wire from toggle switch in cab to fuel pump ?
and hot wire the coil from, toggle switch like the old days ?