B16, B18, B20
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By That One Dude
#155518 Well if you have an OBD-II engine, with and OBD-II engine harness, you would use the conversion harness from the engine harness to the ECU harness.

Like I said above, I don't know the physical differences (if any) between the LS, GSR, B16, ITR alternators aside from the OBD numbers.