OK, so 24 volt winches can be had for dirt cheap compared to 12 volt winches (we're talking used of course). Many of us run two batteries. You can hook the batteries in series to get 24 volts. Piece of cake. You can run the rest of the truck off 12 volts piece of cake. However, you're bent over a barrel if the negative terminal to the winch is hooked to case ground. Does anyone know if the negative terminal of the winch motor is hooked to case ground? What are my thinkings you ask? Well, let's start with my setup. I have two batteries. I run off one all the time. The negative terminal of the auxilary battery is hooked to the block. I have a battery isolator between the positive terminals (for charging). This way if I get a dead battery all I have to do is jumpstart myself with one cable. I have a Furd starter solenoid and cabling to make it so I can jumpstart myself with the flick of a switch but it's damn cold outside to be doing stuff like that. Anyway, wiring up the batteries is simple for 24v. You let the main battery run the truck. The auxilary batter is isolated (no connections at all--ignore my previous setup). You hook the negative terminal of the main battery to the positive terminal of the auxilary battery (with a Furd starter solenoid between them). You then run the positive terminal from the main battery and the negative terminal of the auxilary battery to the winch. Fine and dandy as long as that negative cable never touches chassis ground. If it does, poof goes the electrical system. So, does anyone know if the negative terminal of a winch motor is connected to chassis ground? Or better yet, has anyone done this? Perhaps someone has a more simple way of doing it? Us electrical "enjinmanears" have a habit of making things more difficult than necessary.