Re: "S" off / No bars
1. At pre-crank position without starting the engine. Does the "S" and back-lit led light up after the start-up timer lasped. (water level led goes out) nope
2. After cranking and engine running, does the back-lit led lights up? nope
3. Engine still idling, can you see the flicker on the green F-IDC led on the circuit board? 4. If so, does it flicker in time with engine speed? yup
Odd thing I noticed just now: when I turn my headlamp on or off quickly, the "S" and the backlight light up for a split second. Testing the float sensor turns the water level light on and off as expected. I think I might have a wiring issue. I'll get back to you once I re-check all the wires.
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