Greetings and Welcome to Just answer.
Which bulbs in the vehicle is this, turn signal, brake?
Very strange. The bulbs are usually not that sensetive.
My though would be a bad ground then for that light.
IF you don't mind, please let me know what the issue turned out to be.
took it into shop and it turned out to be a short in the bulb socket- had to replace the socket and then checked the wiring for any other problems -none others found