The non-polarity sensitive led lamps arrived today so I whipped out the tacho and swapped the standard ones for the leds. The leds are longer and foul on the green filters, didn't want to pull the tacho apart to remove them so used tape to secure the leds as far in as they would go. Very happy with the result, they even dim with the rest of the instruments. Took out the screws holding the speedo in but couldn't get enough purchase on the cable connector to release it. Currently left with this, That's before dimming it slightly. So, how do I get the speedo out without dismantling the entire dash?