On my newer car I had the bulb-out warning pop up on the dash, but it only took a 50Ω resistor to quell that. Was just on the edge of the there-or-not threshold, so just that little bit of extra current put it over, not the ridiculous 4Ω resistors or whatever they sell to “fix” that. Those resistors heat up like a whole ’nother bulb, and you could completely take out the LED bulb (or have it fail) and things will still show normal.
A cow-orker has a Mini Cooper, and talk about finicky… a not-quite-yet-burned-out bulb (marker light) will throw the bulb-out warning! Drove him and his mechanic buggy. The NQYBO bulb would have a thinner filament, thus higher resistance, thus lower current, and that was enough to throw the error. Replacing the still-working bulb with a brand-new one fixed it.
Anyway, it was easy for me to pull the taillight assembly which had its own wiring harness and one plug-in connector, so I could solder in the resistor at my leisure. I didn’t want to use crappy crimp-type wire-taps (which I could then get done in like 30sec for both sides), but did it right with soldering and liquid-electrical-tape and everything. More of a chore, but it ain’t going anywhere.