Are you testing these bulbs currently and they went off? Or am I just being stupid and failing to comprehend what your saying. LOL.
Please note: Different housings will produce different outcomes, please take note of this. Also, these bulbs are to be used only for the Reverse / Back Up Lights, if used for other positions of the vehicle, it will void all warranties and replacements.
About time HugoV. I was wondering when you're going to chime in....