Review on TUINCYN BAU15S PY21W LED Bulb Amber CANBUS Free Turn Signal Lights 1156(150°) 12496 7507 2641A Anti Hyper Flash No Error Super Bright Blinker Replacement Bulb With Built-In Load Resistor(Pack Of 2) by Chuck Shapiro

I bought 2 sets of these bulbs to do the front and back markers. Since this car is not so advanced electronically, based on the other reviews of having 4 work without issues I gave it a try.Installing in the front indicators resulted in only the left side blinker working (1 out of 2 bulbs) at first I thought the bulb was defective so put it in the lit side and it worked. I then removed the front lights and proceeded to try in the back, which worked without issue.I have no idea why only one side refuses to work because its nothing to do with the bulbs. The second set also arrived with 1 damaged bulb so I would have been unable to install all 4 regardless.It is unfortunate that there is this bizarre issue but I am not going to lose sleep over it. After diagnosing the issue it has something to do with the electronics in the lights not being compatible in the front, but like I said the same bulbs work fine in the back, go figure.