P38A Electrical Rear Lights Gremlins

Hi
I've had constant problems with my rear lights, these constantly change each week, for many weeks fuse 15 constantly failed this has been ok for the last week. I have also had problems with fuse 14. From Sunday the lefthand side isn't working all the bulbs are ok checked these with the righthand side.
I did have a problem with my BECM that super locked one rear door and one fog light constantly on. I took the BECM apart to clean and liquid from inside, and cleaned terminals, did cure initial problems but not after the fuses started blowing. Had to break the motor on the rear door.
Any suggestion please....my MOT is November.

Milky milky!!
It may be worth having your BECM looked at professionally and or it could be the start of fuseboz issues.
Check all the earth's scattered around the engine bay also. Little 10mm nuts, beside the eas box and around the battery box area also.

Ah it’s the milk guy.

my Money is on becm then, whip it out and have another look. Fuse 15 blowing sometimes Earth runs length of vehicle sometimes becm like Enery had. Fuse kept popping all time.