I completed this mod and discovered that the relays for the quarter windows are reversed.

The diagram and schematic show the relays 1&2 are for the left window, and the relays 5&6
are for the right window, when, in fact, in my car, they are reversed.

I own a 1994 Jaguar XJS 2+2, VIN: SAJNX2745RC193555

The electrical information is from: Mitchell Repair Information Company, LLC
specifically for a 1994 Jaguar XJS

I am posting this as an information piece for those that may accomplish the mod,
and save time and teeth gnashing.

The mod works as Jim Morton describes in his letter. Jim is the owner of
Morton Restorations, Greensboro, NC, 336-294-3436

Ali King