I have recently replaced my engine. 4.0L in a 2000 XJ. Running great with no CEL or issues. I have a small wiring harness connector that is closely attached to the connector for the oil sending unit and I cannot find anything to attach it to. Does anyone know what connects to this connector? TIA

Post a photograph or a link to a photograph.
Also was that 2000 the original engine and model or was the the replacement engine?

Both. the original and replacement engine are the same. I'll get a pic this weekend. Thanks.

Did you have an opportunity to photograph it?