[steamship]

The following video is the best one I've seen of dozens, that explains about testing for parasitic drains:

https://www.youtube.com/watch?v=KQxknvD59GA

He puts the meter leads across the negative terminal and cable, and sets it to amps. Anything higher than about 1 amp seems to be a drain of some sort. It's then a case of pulling fuses and checking the meter for a change. I'm assuming that you'd have to do this with relays as well if you can't find any drain, but he doesn't mention this.

The problem is you have to fool the car into thinking it's locked up. I did come across one video that suggested how to do this, and since our cars have fuses in the boot, the engine compartment and inside, you'd need to open both front doors (to access all the fuses), and then lock the mechanism on the door to fool it into thinking it's closed. You then need to do the same with the boot mechanism, and for the bonnet, there is a switch at the front of the plenum chamber, near the brake fluid reservoir. As a reminder that you've 'locked' them, put some tape over the mechanisms, so that you don't just try closing them without 'unlocking' them.