Correct, track power, ground, smoke element voltage, and serial data come to the smoke unit. You're missing smoke element voltage.
Installing the regulator is usually accomplished by clipping the wires near the old one. Then you can splice the wires together, much easier than soldering PCB pads. There are typically two black wires (both ground), but sometimes only one is used.
- Black (frame ground)
- Red (Track power)
- Brown (R2LC serial data)
- Black with brown stripe (smoke element power)
Click on graphic to expand. This graphic is close, but the newer smoke units got the chuff from the serial data, thus the chuff switch isn't connected to your smoke unit.
