So, having been favorably impressed with brighter/more even illumination from modern LEDs used to replace BA7s in this thread
http://forums.pelicanparts.com/porsche-911-technical-forum/644374-ultimate-led-ba7s-bulbs-gauges-ala-etarga-pic-vid.html, I'm on a mission to eradicate most of the incandescent bulbs from the cabin - both to reduce heat/current, and because they're brighter/more intense colors. Not to mention, they should last forever.
I am going to leave the generator warning lamp for now (because it needs to pass current both ways to work correctly, and LED's don't do that), but the others are fair game/mostly done (festoon courtesy lights also need to pass current both ways - but I have an idea for that).
I've got a handful of appropriately-colored LEDs to replace the all-glass 2721 bulbs - e.g. oil pressure/fuel/brake warning, fan/heater controls, etc. Think they were 10 for a buck fifty... LOL.
One issue I've encountered is that the LEDs - actually, just one side - for the flasher/indicator repeaters in the tach behave oddly. The right side flashes with the hazard switch, and also flashes on the "off" part of the cycle for the left indicator circuit.
When the bulbs are put back, everything behaves as expected; I did replace the indicator stalk a few years ago - but I'm fairly sure the connectors went back as they came off (because I swapped one connector at a time from the original to the replacement
).
So, before I invest a bunch of hours in Porsche Yoga with my head under the dash/feet in the headliner or poring over the current diagrams/checking connections - has anyone tried using LEDs and had them "Just Work"?
I think I may just have one wire misconnected somewhere, but it'd be nice to have it confirmed that it works for others, rather than some aspect of the original design