Dale,
I appreciate the information you provide, but sometimes it is a little over what I want to delve into. I started with individual lights and still use them. These strip lights when cut down to three are very small and compact at 1". I just need to simplify. It is much simpler for me to gab a 12v wallwart run it into a stepdown converter so I know I have 12v and then power a buss and connect my LEDs to the buss. Most of us have a box of old wall warts in our garages and you can get the step down converts off ebay cheap - 5 for $6.25.
This is a typical Netgear 12v Power supply I had three not doing anything, but collecting dust. All have 1 - 1.2 amps output
Even though it says it is a switching power supply it is putting out 13v so if I run it through a DC-DC stepdown converter I can dial it in at the Voltage needed.
I then power an old telephone punchdown block as my LED buss and use old CAT5 twisted pair to run to the LEDS.
I buy these prewired LED with resistors and just use the phone splice connectors to connect them to the CAT5 wire back to the buss.