My new battery (and the previous one) has been draining over a week needing drip feed from the battery charger. I did a parasitic drain test and have isolated it by removing fuses. The drain is from the interior light system. Any ideas where I should go from here both interior light and boot light are off. Could door switches be the problem? If so do they need replacing or can they be tidied up?

Do you have LEDS installed anywhere in the interior ?

The only led is the red one for security system

Glove box light ? console light ?

Instead of just turning the interior lights off from the switch, disconnect the plastic plug behind them, same for all other electrical switches, doors, glove box, boot, CD/radio, do this one at a time, and check again each time.

It will probably be the courtesy light delay electronic module.

I have NFI where it is however.