1975 280z ignition wire harness need some insight!!!

disappointed,,, well im installing the ignition wire harness on my swap--(280z l28et)-- but im wondering... can i just by pass the ignition relay and the inhibitor relay and install a switch from the coil to the ignition switch... and if i was to install the wires the proper way,why is it that i have to go through the inhibitor relay.. and as of now ive been tryin to locate the relays and have not dont have any clue were there located inside the car. i see some relays on the passenger side under the dash but ive read on other websites that say its on the drivers side but had no luck seeing anything there... but if any one can post pictures of ur ignition relays and inhibitor relays that would b greatly appreciated...

please guys im trying to turn on my ride please help me if u really want to see another z on the street worth looking at...