I found some stuff on OBD1-OBD2 dizzy's and some little things on the alt's but my 98 civic ex harness has a 3 prong plug while the new b18b that I dropped in has 4, how would I wire that sucker up cauze everythin that I saw for alt's were 4-4 wire

 

I've never heard of that problem before. I would say to try and use the D series alt if it will bolt in and line up correctly or find another OBD-II B series that has a 3 wire alt, though I have never heard of them.