The flat-ended bulbs will be 5V. This means you will need to adjust the lighting CV to a value of 5 or 6 to save you from blowing the bulbs.. There is a diagram (think you posted it) showing how to connect the lights, and the manual will list the CV for the lighting divider.
The tips for insulating your wires are good. Also insulate (if necessary) where you intend to mount the decoder, especially if you intend to mount it on a weight (metal!) in the loco..