Just to let you know, i've had a problem recentlly, with 2 of the LED's not working.
Fortunately, this problem was easy enough to rectify, by doing diagnosis on the still intact testing circuit board. It seems one of the LED's around the speedo covers 2 "Pads" on the PCB.
Originally, it was soldered across these 2 pads, i'm assuming it's due to the fact that 2 LED's are in series @ 4v to reduce them to 2v a piece.
What i had to do was only connect it to one of these pads. I have no idea why, but if I did connect it across the 2 pads it caused a short on the Temperature gague LED, causing that LED to remain unlit too.
Ah well, I solved the problem, and would be interested if anyone else would like their dashboards doing
Possibly in any other colours
or even mixed