As per your suggestion, I am monitoring the voltage at the headlight switch. When lights are off, voltage reads 13 volts. When lights are turned on, voltage drops to 11.8 volts. Also, when brakes are applied, voltage drops even further to 11.5 volts; add the turn signals and it drops to 11.3. Is drop from 13 to 11.8 volts normal, as this circuit does not seem to be well regulated? PS, the light haven't failed since I began monitoring.
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