yo.
Had a few e30's in my time in Nz. Jump on bimmersport.co.nz - so many knowledgeable people and sweet cars on the site. Unsure about shipping parts from Nz but its pretty plentiful over there for e30's.
As for the electrical fault, grab a multimeter and check on the relays in the fuse box in the engine bay. Had the same prob in one of mine and someone had used the wrong relay and it was draining the battery.
Just trying to teach myself photoshop and working it out as i go. made a duplicate layer then deleted everything except the body off the duplicate layer. To change the colour i used the hue/saturation settings.