After owning a used vehicle with no warranty and for maybe 300 miles of driving the left rear brake light failed. There are two bulbs on the left side. One is the turn signal and the other has two elements and one comes on when the lights are turned on and a second element that comes on when the brake pedal is pressed.
Quite a few miles later we get a light alert on the dash that another or the same light was out. It turned out to be the same left brake light bulb. The existing one on the right side is 1157 and the replacements we got were 1157LL. The pack had two bulbs and we tried the spare bulb and still the left brake light fails. The tail light works but when the brake is pressed the tail light goes off and no light on the left side.
I moved the right side bulb to the left and get the same result.
This is curious as to how it happened. A failure after hundreds of miles and then the new one last maybe 3 more weeks and now bad. It is obviously (or not) not the bulb. I can go to a parts yard and pull a replacement rear light assembly with a 3 day warranty.
I'm not clear why the left tail light works and that specific element goes off when the brakes are applied.
We can drive with one brake light and if we are stopped by police no issues. But if that officer sees us again at a later date and the same bulb not working they might give a ticket at that point.
Nothing is seen as being crossed as far as wires, no wire that might have a naked spot touching metal, etc.
Any ideas on why this is happening. We will not take it to a mechanic under any circumstances. That is not a solution. Thanks.