Is that with the engine running?
That's quite low and would indicate a flat battery.
Try it, a lower voltage shouldn't do any harm. It might just become unreliable.
Lol I'm a dummy. I didn't turn on the engine, but I had planned on at least having the power on, which now that I think about it, I might have overlooked. You're probably right. I'll measure again later with the engine on, I'm betting I'll get a solid 12 volts at that point.
If this works, I'm just starting to realize exactly what's going on here. Again, I'm an electronics newbie, so bare with me as the lights come on in my head lol. I measured the power coming off of the end of the cable for the western digital media player when it was plugged into my house. Guess what. 12 volts DC. So all this time I've been using it in my car with an inverter, the car supplies 12 volts DC, my inverter puts out AC for the media player, but the AC adapter on the media player is simply converting it back to 12 volts DC? So this device runs on 12 volts DC, so in theory, all this time I've been running the sucker off an inverter in the car, I could have just purchase something like this for $5:http://www.amazon.com/Generic-12-Volt-2-1mm-Cigarette-Lighter/dp/B00DVZYA20/ref=sr_1_42?s=automotive&ie=UTF8&qid=1385995189&sr=1-42&keywords=cigarette+lighter+cord
Am I correct? If so, it seems like it should work just fine to wire the cable directly to the power cables from the dome light. But what about amperage? Do I need to be concerned about that at all?