1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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If the regular incandescent lighting works OK to full brightness with the dimmer control, it may be the EIC (electronic instrument cluster) onboard power supply module with bad solder joints or a failing module.
It is a DC-DC converter that steps the 12 volts up to ~26 volts for the VFD (vacuum florescent display) tubes.
Probing with a voltmeter and looking/smelling for burnt areas may help you diagnose this. The modules had different appearances over the years, but look for a device with +/- and +/- on it.
It is a DC-DC converter that steps the 12 volts up to ~26 volts for the VFD (vacuum florescent display) tubes.
Probing with a voltmeter and looking/smelling for burnt areas may help you diagnose this. The modules had different appearances over the years, but look for a device with +/- and +/- on it.