So i just finished replacing the drum brakes and one wheel cylinder, all new hardware, the light wasn’t on before the job, brakes don’t seem to be dragging but im not 100% sure, I don’t want my shoes to wear prematurely because that’s the reason I had to replace them, all the shoes we’re fine but one and it was onl wore at the bottom, brake fluid is low at the moment from bleeding but I would imagine the trucks not that high tech to tell me the brake fluid is low, cause she’s only an 89 5 speed 4x4 so my questions are why is the light on? will they wear prematurely? and how do I fix this