Ok, so I changed out the battery this lunchtime for one from a 325 TDS E36. That only just fit into the boot slot, and boy was the negative lead a pig to put on!!! Anyway, first, I couldn't start the car, which turned out had been flooded. That was sorted.
Then, I wanted to test the lights cos they weren't coming on over the weekend, I presumed cos of the flat battery. However, now the following are not coming on, door open/switched on via headlight switch;
Front AND rear sidelights, number plate lights not on
interior lights - front centre light(even manual switch on not working), C pillar lights, front footwells,
ALL elec window switches, full dash - climate panel, OBC, speedo pod, headlight switch NON illumination
These are what ARE working;
Main beam and indicators,
interior front left and right map lights(manual switch on)
I have checked all the fuses and they are all ok, not a single one blown.
I havnt tried the window switches themselves yet to see if they open or close, or the sunroof. Engine was running when I tried the headlights.