Line Lock - front or rear??

I have my line lock on the front wheels and the button is on the floor where the dimmer switch used to be. I pump up the brakes with my right foot and then press and hold button with my left. After the button is on I can move right foot back to accelerator. I have a light wired to it so I can verify when it's on. I have no wires on the shifter or the steering wheel.