brakelight wiring

Hey guys I need your help. I decided to shrink the tail light on my CB400t II using an EMGO model I'd seen somewhere on here. The problem is that the stock light has 3 wires and the new one only has 2. So I've got it wired up to flash bright for braking but I cant get the low light setting to...

Ive purchased an aftermarket brakelight and Im stuck on how to wire it. The stock tailight on my sl350 had 3 wires going out to the switches, battery and ignition switch. On This new one it only had a red wire and a black wire so i sent the black to negative battery side and the red i split out...