Reply to "How to go about adjusting different accessory voltages on a new spur serviced by a fixed voltage bus line?"

Here's a beefed up schematic version of the bridge rectifier diode method for voltage reduction.

If you use individual diodes, wired back to back, the picture at the bottom would be cut in half vertically between the 2 groups of diodes. Each set of diodes produce an AC voltage drop of about 0.7 volts. With the rectifier, you get double that.