HEMI 5.7 Wiring Harness

You have made it more difficult by eliminating the power distribution center, but hell, anything can be done. Get yer diagrams and figure out the power and ground distributions for the computers and fuel pump. You'll find they are all relayed, so maybe you can use the relays you cut away, but hopefully didn't throw away. Power to the computers and fuel pump HAVE to be wired "run/start". You'll find this to be the blue wire that currently goes to the positive side of the coil. This is critical, and should be relayed because of the additional load. Any thing that can be relayed should be--thus not overworking yer 40 year old harness. Good Luck. Keep us posted.