Dom... I like to do 1 circuit at a time... some of them do interface with another but that is usually 1 or maybe 2 wires.... for the ignition and the running lights/turn signals that stuff goes up the column and there is usually 2 hot leads going up the column but still the easiest way to to refer back to the book (wiring diagram)... also make sure you dont have the 4 way flasher on with no flasher in it.. that will mess you up.... LOL... I know