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|seth||replaced VR battery chargng 14.5v lite still on.
|Dave||Seth - If this is a 316 with the Onan engine, I have some experience in this area.
First, check the voltage at the battery with the tractor off (should be over 12 volts) and then at full idle (should be 13.5+ volts). Then I would pull the battery and take it into a parts store or a JD dealer and have them test the battery under load. I recently had a battery light issue on my 318. VR was putting out enough voltage, but as soon as I engaged the PTO or turned the lights on, the battery light came on. Bad cell in the battery.
Next, clean the connections for the battery, starter, ignition switch, and PTO switch. While the battery is out, the main ground is below the battery tray. Pull the tray and make sure the ground connection is clean, no paint, and no rust.
Also, the wire leading from the middle lead on the VR may have too much resistance, choking the voltage to the system.
If the battery checks out o.k., then I would look to the TDC module. But only as a last resort (they are expensive). The battery light circuit is controlled through the TDC module.