altenator wiring help
i have a 91 rs camaro. the plug for the altenator was gone during engine swap to a carbuerated 355. i got a new plug from oreillys on the plug it has 4 letters on the side where the wires come out of the plug. the letters are s f l p. on the s pin there is a red wire. on the f pin there is a black wire. on the l pin there is a brown wire. on the p pin there is no wire. my question is where exactly does these go to and is there suppose to be a wire from the p pin in the plug. i have tried and read everything but cant get it charge the battery. new battery and new altenator. just about ready to pull my hair out. any help would be most appreciated.