I'm going to be driving/living in a '00 Mercury Sable Sedan LS Premium 4D, which has a 24V electrical system. 100% of my equipment runs on 12V. Does this car have a high-current (>40A) 12V regulator in it to power my gear? Or will I have to build/buy my own?
Your vehicle is equipped with the Duratec 24 valve double over head cam 3.0 liter V6. In the descriptions where you see 24V, that stand for 24 valve. The car has a 12 volt electrical system and not a 24 volt one.
The Mercury Sable has 2 different engine options. One is a 3.0 liter V6 overhead valve (OHV) 12 valve and the other is 3.0 liter V6 double overhead cam (DOHC) 24 valve. The 24V is there to distinguish the engines because they are both 3.0 liter V6.
You only find 24volt vehicle systems in military vehicles/emergency vehicles. I don't think Mercury would release a vehicle that required 100% different electronics amongst it's line of vehicle. Whats the point?
24volt vehicles are that way to power on board equipment.
I.E. Military Communications vehicle.