I have a theory that these LEDs are rated for 12 volts and are unhappy when the alternator supplies 14+ volts to recharge the batteries. It seems to me that the LED strips are very bright, even in the daytime. Before I replace my strips, I’m going to look into wiring a 7812 regulator integrated circuit to limit the voltage to 12 maximum. Anybody tried this?
7812 Voltage Regulator Fixed Positive 12V Linear IC L7812CV | QQ Online Trading