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so i have replace both the alternator and power voltage regulator and the battery still will not charge, so im wondering if because the battery was hooked up backwards when i bought it and didnt know it, i possibly fried the alternator or maybe some wires?

The negative terminal on the battery should be grounded. The screw terminal with the heavy wire on the alternator should have +12 volts with the key off.

On the 6 wire plug from the VR white red = W = fuel pump and charge light, white = W = ignition, white blue = B = battery, black = E = earth, British for ground, white black = F = field, the stem of the Tee connector to the alternator, and white green = N, feeds back to the VR.

Withthe key on, W, B, and F should all have +12 volts.

LUV's have a weak link in the electrical system, the fusebox. The terminals the wires connect are riveted to the fuse holders. A little age and corrosion, and you get electrical intermittents. I solved mine by taking it apart and soldering the joints. Others have cleaned it with lemon juice, and others a new fuse box.