Looks like someone has put some warning lights in the 2 switch blanks - probably for spotlights/roof lights etc......... the only way to know for sure is to trace the wiring ;)
Timing: Bosch VE Pump timing check with cover plate on - Land Rover 200tdi and 300tdi diesel engines - YouTube
My mates disco's fuel pump was retarded by 2-3 degrees, once it was advanced and locked (setup properly) the smoke stopped ;)
Yep thats why i'm thinking its the timing - as yours will have been reset using locking pins when the belt was changed - my mates disco used to blow white smoke before i set up the timing properly - then it stopped as the timing was retarded ;)
Yep just remember to get the right sized crimps for the common live at the starter motor and for the post on the alternator (the posts are different thicknesses ;) )
Might be an idea to service the callipers when you change the pads - make sure that the pistons and seals aren't damaged and move in and out of the caliper body easily under brake pedal pressure - don't forget to copper grease the back of the pads to prevent brake squeal ;)