Hi,
if you plug the motorcycle cable into the socket, the charging should automatically start and the display will light up. If the display does not light, the motorcycle battery will not charge.
This may be due to several different faults or combinations of these:
1) faulty power cord
2) faulty integrated charger
3) defective / burnt fuse
4) faulty battery
5) corroded or disconnected contact in the battery circuit
I think you'll have to remove the covers to diagnose the malfunction.
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