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  1. Auto Electrical
    I have some understanding of how the glow plug circuitry works. My '95 PATROL 2.8TD has difficulty starting on cold mornings, and once started, the GP light flashes until the engine has warmed. A voltmeter measures 12V on GP#1 until the relay operates, then 2 to 3 volts (not 6V) until a quieter...
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