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Home >> Mercury >> 2005 >> Montego Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Test >> Pinpoint Test F: The Control Illumination Does Not Dim >> Normal Operation

Normal Operation

The smart junction box (SJB) monitors the input from the instrument panel dimmer switch by sending a voltage reference signal through circuit 1403 (BK/WH) to the instrument panel dimmer switch. The return signal is sent through circuit 1036 (BN/WH) back to the SJB.

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