Get wired!
I don't have a wiring diagram, but I checked all the systems immediately after I purchased my H-23.5 five years ago and made copious notes. Here is what I show. Look at the female deck receptacle, with the large pin hole at twelve o'clock. The large pin is the common (ground) and connects to the red wire. The receptacle pin at 4 o'clock is the steaming light and connects to the blue wire. The pin at 8 o'clock is the mast (or anchor) light and connects to the green wire. With this, you can work backwards to connect the wires to the plug. I hope my five-year-old info is correct.Dale Wiles/v GrandechildSandpoint, Idaho