I have a 90 yj 4.2l that has been converted to fuel injection. heres the thing, fuel injected yj's use a different computer. the one behide the glove box is no longer used for the motor. look under the wire harness were it goes from the engine bay into the back of the back of the fuse block. Is the a back box there that another bunch of wires going to it? that is where my new PCM is mounted.If so let me know. I'll fill you in about power to that if thats what you have. By the way, where on long island are you? I'm also on the island, in Ridge.