4 pins of the 14 pin socket concern the main dash lights, apparently.
Pins 13 and 12 supply 12v. Pin 8 supplies whatever voltage comes out of the rheostat (9v in my case). Pin 5 goes to ground.
Using the meter on pins 12 and 5 of the socket (with socket not attached to dash) gives 12v.
Using the meter on positions 12 and 5 of the printed circuit board (immediately below the socket) gives 0v.
How can the voltage from pin 12 become zero on the PCB? Can anyone explain what I should conclude from this?
Pins 12 and 13 go firstly to the little voltage regulator block thingy on the back of the dash (or whatever that thing is). See pics below. The main dash lights are in the 4 black plastic holders and also the highest central blue holder.
