My wife pointed out that the brake lights are very dim on the 914, and I had to agree. Since I’m using LED light bulbs, this shouldn’t be happening. It’s odd, though, the bulbs have between 11 and 15 LEDs but only the center LED is on. I checked the voltage, and it seems ok (13.2 volts), so it must be a current limitation somewhere in the system.
Apparently, the 914s have a weakness in their electrical system at the fuse box inside the main cabin. The wires get old and break, or the connectors lose their grip, or the wires get crushed by the fuse box and the insulation starts to go. Or all the above. Sparky is going back to the shop to see about fixing this very, very soon.