I have an 1988 John Deere 180. After starting my mower,the battery light stays on. I have taken loose and sprayed almost every connector. I have noticed that when I take the wires off of the little black 1"x 1-1/2" terminal block (with 2 screw studs for wires to slide on) that feeds the lights, the battery light will go out. I put the wires back on the block and disconnected the lights and the battery light stayed on. Can that terminal block somehow be draining my battery?