My tachometer on my 2000 Sportster 1200 has quit working. This tach is no longer offered by H-D. Rather than buying an after-market replacement, I thought there may be an electrical issue that is behind the tach failure. By the way, the speedometer is working just fine. When I turn my ignition switch from "off" to "accessories," the speedometer back light and digital mileage display both light up. However, the tachometer back light doesn't light up. When I turn the ignition switch to "ignition," the tachometer back light does light up. However, no RPMs register on the tach when the engine is started. The lack of "life" in the tachometer when the switch is on "accessories" is somewhat suspicious to me. Is this an indication of an electrical problem outside of the tachometer, or is this a normal operation?