[vector1]

i would run the efi main pwr and neg. wire directly to the batt. (isolated), efi should have internal fuse, there should be a seperate trigger wire to ignition, i also isolated the ignition to a dash switch that i use to turn the engine off, nice if you want to keep the efi powered up for datalog, etc.;

the alt. charge wire directly to the batt., plumb appropriate amp. fuse into this wire; if there is an exciter you can switch this at dash or plumb hot.

the other hot wires that pwr acc., dash, lights, etc could go through your switches.

you do not want to run your efi pwr off the solenoid terminal or ground to a bus with other electrical items, very important. your efi could be different but they will pick up rfi. mine is the accel unit and it did work fine the way i had previously installed it but it was picking up rfi and displaying trouble codes and lights, not all efi systems will display codes so you could never know if there is a problem.

your msd or ignition amplifier should also be wired both + and - to battery away from all efi.