I'll try this again...since no one answered my first post... I have recently installed 2 motion sensor lights, one with flood lamps, and one deco fixture over a front door. The one over the front door has instructions that say it can be wired to another motion sensor light using an additional "red wire" to the black wire. Both motion sensor lights are connected to a common light switch. One is supposed to be "master" and one is "slave". The problem is, I can't get the "master" to work! It stays on all the time. The flood light sensor works fine. Both lights have separate motion sensors. They are both set to one minute time-on. If I disconnect the "red wire", the flood motion sensor does not work. They both require 1 1/2 minutes to "calibrate". They are made by Heath and Heath/Zenith. What am I doing wrong? Please answer me..thumbs up or down..ok?