I can't find the shop book with the wire diagrams. Reading back over your post, are you using an aftermarket wire harness? If so you need to find the wire diagram for that harness. It looks like you have two red wires connected to the post on the rear of the alt., and the white plug has two wires. The brown wire on the white plug excites the alt., (12 volt power from ignition switch to turn on alt.). Get a volt meter and check when the ignition is on if there is 12 volts to that wire.If not it won't charge. With the engine running you should have 14 volts at the battery.