any recommendations for a brand and source for LED bulbs for the instrument cluster for '71 Comet. Also, how many are needed.
3 for illumination, 1 for high beam indicator. I wouldn't use them for the turn signal indicators... https://www.superbrightleds.com/
I put some in years ago. Some are polarity sensitive. Before installing, make sure which is the negative side and mark it. I had my dash out again and the left turn LED out. I though I put it in on the correct side. I have not had a turn signal indicator for years. One of these days, I will pull it apart again. Micah
Adding a 4th bulb (or LED) will do more than just replacing original bulbs. You'll need a wired socket or could use a stick on LED