Harry,
I also have a bradley smoker. For hot smoke attatch the 2 foot long cable to the smoker and the box, turn up the slider on the front of the smoker, it is just below the door. For cold smoke do not attatch the 2 foot long cable and turn the slider down, I always do cold smoke therfore my slider is always off, but please remember that there will always be heat where there is smoke. The air vent on the top of the smoker allows for the smokey taste, vent only open a wee bit you will have heavily smoked items, vent half open there will be a lighter smokey taste.
HTH
Lillian