trouble free and beautiful until yesterday. but today, ignition position doesn't trigger the accel motor. then I pull out the key. there seems to be residual current that trickles the speedometer needle and makes tiny electrical noise. If I put the key now, there is no electrical signal on the instrument panel.

So I disconnect the battery and reconnect. Now the instrument panel lights up normally. But then it won't start. Then the above situation repeats.

Replaced the battery just now. The same problems occur.

Any clue? Seeing that no electrical response on the inst panel after the first ignition, could the main replay have failed?