Alternater wiring

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New Member
Im putting a 95 b16a into a 98 coupe i have a harness that fits the engine but the alternater plug is diffrent.i had to get an obd2 harness for the engine to get it in but the plug for alternater has three wires and the alternater on the engine takes a four pin plug. the three pin plug has a red and white, black and yellow, and blue and white. the fourpin plug has white and yellow, blue,blue and white, and black and yellow. has any one dealt with this before do i need a difrent alternater or can some of the wires be joined.any info appreciated because this is a first for me. thanks.