Electrical issue

[Cooper1275]

Do the whole exercise first and see if there is a parasitic battery power drain.
If there is then disconnect all the wires on the alternator.
If it still exist then start pulling the relays and fuses out.
If you still can't find the culprit, then search for the main point where all the positive wires for all the connections come together and disconnect it there wire for wire till the power drain drops.  The wire that made it drop must then be traced to see what it is.
Also disconnect your ignition coil, if it stays power on it can also drain a battery as it stays charged.

perfect. Thanks!

Really appreciate the help and advice guys.