If your "sacrifical 88 Xj " was a 4-door, you will have some wiring issues, because the driver master control switches are for all 4 doors, and the associated wiring. Will work if you snip off the drivers door harness for the 2 rear doors, but then you will have a drivers master control with 2 dummy switches for the rear doors. The best/easiest way is to find a 2-door XJ power window harness (or MJ power window harness - lots of luck), which includes the power door locks. You'll also have to get the drivers side master control switches from the 2 door XJ. The passenger door switches are the same.