Lighting problem

Just put in a brand new blinker/4 way switch, still no brake lights. I have power to the brake light switch. When the blinker/4 way switch is plugged in (the plug shown above), I can not get power to go through the brake light switch when the pedal is depressed. If I unplug the blinker/4 way switch at the plug I get power through the brake light switch to the white wire of the chassis side of the blinker/4 way plug. Im lost to why this is.