This is an interesting question, and the answer should be on the package.
It appears that there are two or three kinds of 7506 bulbs. One is an incandescent bulb, which draws about the same current / power as an 1141 or 1156 incandescent lamp, commonly used in automotive applications. Because this 7506 is electrically similar to those others, it will behave the same in a blown-bulb outage detection circuit (ODC), but there doesn't seem to be any advantage to using this 7506. All of these bulbs draw right around 1.5 amps / 20 watts.
There is also a pure LED version of the 7506, made by Sylvania. Like most LED bulbs, it draws considerably less power for equivalent brightness. This bulb draws around 2 watts. Because of the much reduced power, it probably will NOT work in a blown-bulb detector, because the detector, expecting 20 watts but seeing only 2 watts, may conclude that the bulb is blown even when it is not. If you are using this bulb for interior lighting, this is fine because there is no blown bulb detector in lighting circuits. It also works well for automotive applications like running lights or backup lights, which are not monitored by a blown-bulb detector.
There may be a 3rd kind of 7506. This is an LED bulb, but the base contains a resistor which draws extra current. The idea is to draw enough power to satisfy the blown-bulb detector, and this sounds like what you are describing. Of course, by using these, you get the ruggedness of an LED, but you lose the small-current advantage of an LED.
Since you didn't say whether you are using these bulbs for an automotive function (tail-lights, directional signals) or for interior lighting, it is hard to answer your question. The thread you are looking for on this forum advised against using CANBUS bulbs, which are the third kind. You can probably find this thread using the Search function.
Bill
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