OBD0/1/2 Alternator Plug Wiring – .:FFS TechNet:. Certain Honda engine swaps require changes to the alternator connector. In most cases, wire color matching does the job of figuring this out, but sometimes the wire colors are completely different. Â OBD0 and OBD1 B/D-series engines and wiring use the same 4-wire round alternator plug, so they are compatible with each other ie. plug n’ play. OBD0 & OBD1 chassis to OBD2 Alternator Adapter This Alternator adapter is made for a 1988 to 1995 Honda or Acura chassis, using a OBD2 (96-01) Alternator. This is also commonly used with our OBD1 Mil-spec wire tuck engine harnesses if you're using a OBD2 Alternator.