Thanks Glenn,
Originally I purchased 6 of these bulbs. Five for the clearance lights with a spare. Didn't like the yellow color these led whites created inside the lamp lenses as it failed to match the amber of the bed lights. So this is how I afforded them for use in the gauges.
So, for the gauges, I used 5 bulbs. In hindsight, while the dash was apart, I should have replaced the heater control bulb. Eventually I will as I have the sixth bulb for this. Having steel wooled the black paint off of the heater control plate, turning it into a bright silver, I am betting it will be a lot brighter(and whiter) with the new bulb as well.
I do contribute equal improvement of the new light from taking the advice of many here and painting the interior of the bezel silver/chrome. I did elect to add the same paint to both sides of the plastic cover that is behind the clear plastic. (it also made a significant difference in reflectivity)
Good Luck! Personally I do like finally seeing the gauges at night. The original light from the oem ones were terrible and for my 'older' eyes, these are perfect.
Hope this helps.
Mark
Remember: You don't need leds for the bulbs for the bright light and turn signal indicators. If I update again I might add one more...but it really isn't necessary.