Fuel Gauge Fault? Replacing a fuel tank sender - Fiat Ducato, Peugeot Boxer, Citroen Relay etc.

Now I know how a gynaecologist feels at the end of the day after poking around in a small hole all day. Almost. It worked in the end, but not without some installation problems. My vehicle 2001 Peugeot Boxer 1.9TD Autosleeper Pescara Motorhome, but it's the same as Fiat Ducato and Citroen Relay and pretty much any tank sender installation and replacement. Key moments: 00:00 Introduction 00:18 Getting to the access hatch 02:45 The new sender 03:44 Testing the new sender 06:04 Removing the old sender 08:07 Trying to fit the new sender 13:02 We have a problem 16:20 Making a small modification 17:09 Fitting new sender again 20:24 It works!