I’ve noticed some voltage needle fluctuation when my blinkers are on and when I lower my windows. I’ve figured my alternator is slowly going out, it looks to be original. Where is a good place to shop for for one, my LC is a 1991 model. I plan on checking the plug as some have suggested but figure it couldn’t hurt to replace due to age. Thanks in advance for any suggestions, I’m located in the aunties States by the way..