Weird 12V question for you electric gurus...

alliemac9 wrote:
@JohnDeereFarmer - Thanks! I'll see if we have a 12V bulb to test with tonight. In answer to your question - I assume the fuse that we changed was not the same circuit as the light that is reading 6V. There were two strange 12V occurrences, and I described both, even though I believe by changing that fuse we solved the 8V at the antenna amp plate issue.

However, changing that fuse had no impact on the 6V reading at a nearby light. I'm not sure how to check the connections along the path. I do have a wiring diagram, but I guess I'll need to disassemble the fake bottom of the interior cabinets to get to the dead space? And maybe take off vent covers to see if I can see the lines in the ceiling? Blah...

If you have a wiring diagram see what else is connected to the circuit that is reading 6V. Check every other light or device on that circuit. If all of the others are low then it has to be at the source, but if only some are low it's a bad connection. If none but that one are low then I would start at that bad voltage and start working back towards the fuse.
You will have to manually trace the wires to each junction. They may have used crimp on connectors, or wire nuts. Just go to each connection and make sure it's tight. If it's a wire nut, take it off and make sure that all of the wires are twisted together and then replace the nut. If you are able to, you can stick the tip of your probes into the back side of the wire nut and check the voltage at each junction. If they used some type of connector that you can't get a reading on you can take straight pins or needles and push them through the insulation into the wire. Then take your voltage readings on the pins. When you remove the pin the hole should "heal" itself. If it doesn't just put a piece of elec tape on it.
Hope this helps.
BTW my dad taught me the "straight pin trick" about 40 years ago and I still use it several time a year.