I have a Jaguar that leaks from the panel under the battery, and no its not a flood car, and no jaguar wasn't a help. So do any of you have a suggestion
The water the last few days was clear this was dirty from 14 years of me not owning the car

 

Typically water leaking into the boot is from above, not underneath.

Check moon roof drains and rear window/backlight sealing.

 

There are 2 drain lines ( L & R ) that come down from the roof line and the tube goes through a hole in the sheet metal to exit . The line may be pulled up and out of those sheet metal holes . Located close to the wheel arches . Otherwise the hoses get clogged

 

There is one wire that is disconnected unfortunately I had a faulty battery so no lights on the car I will get a picture up tomorrow if you wouldn't mind checking

 

Make sure you install the battery with the positive post in the positive direction of travel . A service garage will even error as it's a bad thing if not correct .