When I turn the wipers on they go up past the roof. Then they stop there and wiggle a little in pleasure of my failure.
I have not responded because I ran her a good deal. Headlights work fine with high and low beams.
Orgnl, I turned the wiper knob clockwise and the wiper blades went to heaven. Then I turned it off when I realized instead of seeing wipers go back and forth, they disappeared from view all together. They went up, looking from the cab - to the right - not left and then down but due right - the opposite direction in which a wiper should go. Turning the knob off did nothing because the wipers were affixed to the upward position in which they had become rested - in the 2 o'clock position (looking out from the cab). (11 o'clock if you viewed it head on from standing outside the vehicle looking at it head on). It reached this position by traveling in the opposite way it should.
Does the rest of the HMMWV operate correctly? I'm not advocating that you try to run everything if you believe there's a major electrical fault, but in case you did, did everything else seem to operate fine? Just considering if you have a reverse polarity situation.
Otherwise, I'm thinking that you might have the wiper arms just slipping on the splined pivots. I've worked on a few GM cars that had wiper arms like to come free. You often don't realize how big of a difference being off by one spline will be, and once it's loose enough to slip, it will keep slipping until it gets worse and worse. I haven't torn down a HMMWV's linkage assembly, but the way it works on a late 90s-early 00s V-body, the wiper motor contineously spins in the same direction and a small "transmission" existed to connect the linkage rods to the wiper pivots and to help bring the wipers down into park position when you turned it off. Working like a locomotive steam engine, you had a linkage going around in a circle off the motor, but radius is only just large enough to make the pivot go back and forth, not complete a full revolution. If anything broke or loosened, that locomotive-style oscillation could "hop" and start working the opposite direction as intended. As well, on those GM cars, if you put the arm on in the wrong position, the car would quickly do weird crap like have the wiper blades stop in the up position instead of the down while running...yet still park it properly in the full down.
My hunch is that battery having been disconnected is a red herring and your real problem lies in something having broken or slipped in your wiper linkage of pivots. Consult
TM 9-2320-280-20-3
10-73. WINDSHIELD WIPER LINKAGE REPLACEMENT and
10-74. WINDSHIELD WIPER ARM PIVOT REPLACEMENT
and very carefully examine the pivots and linkage connection points.