Does anyone know if the x358 xj's were pre-wired for a reverse backup camera?

 

They were not.

 

Ok. I just posted a few photos on another thread regarding cd changer optical cables. Here's the same photos attached of a connector in the trunk back by the battery close to the right rear tail light. I thought this might have something to do with a reverse camera hookup?

 

Nope. As stated, they were never offered with a backup camera, and there's no reason they would have wiring for one. That connector looks like what's described in the wiring diagram as connector CR95, a white, 2-pin connector near the battery for the Transit Isolation Relay, which is removed as part of the dealer's deliver preparation, leaving the connector unattached.

 

Great. Thanks for the info