Electrical Gremlins

[NJP]

My Tam seems to be suffering from a myriad of electrical gremlins at the moment including but not limited to the following...
- Electrical Boot release not working
- Passengers door not opening or closing
- Interior lights flickering
- EFI Fault code randomly appearing and disappearing on the dash
- Water Sensor fault code randomly appearing and disappearing on the dash
- The car can be difficult to start once it is hot - it sounds like it is struggling to turn over then catches as if the battery is almost flat. It has never failed to start but doesnt sound right. It starts fine every time of asking when cold.

Before I bought it the dash ECU had to be rebuilt. Paul Smith warned to check that all the earths were good as the damage to the dash could have been from a faulty earth. I dont have his exact text from the invoice to hand but that was the basic gist as far as I can remember. I ASSUME that the reputable dealer I purchased this vehicle from did this and didnt just throw the dash ECU back in and hope for the best!

Could that list of faults point towards one or several inadequate earth bonds or is this a collection of faults?

Where are the earth bonds on the car?

I know diagnosis from afar is very hard but any experience from others is always useful!

Thanks for any help in advance.

[NJP]

Thanks for the replies chaps.

Some of these gremlins were showing their ugly heads before the rain shenanigans last night.

The hot starting has been an issue since I have owned the car and the random dash warnings too.

The car runs beautifully and pulls like a train so I cannot see there being many serious problems hence my suspicion of electrical gremlins!