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2007 9400i dash issue

Discussion in 'International Forum' started by Jesse24spd, Mar 22, 2025.

  1. Mar 22, 2025 #1
    Jesse24spd

    Jesse24spd Bobtail Member

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    Aug 4, 2020
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    I’m having an issue with the longer the truck sits off the longer it takes the gauges to come to life after starting the truck. All warning lights are active when turning the ignition on but sometimes I have to wait 5 plus minutes for the gauges to come to life.

    All grounds and fuses/relays have been checked and cleaned. LVD has been bypassed with all wires on one lug.

    Truck has a c15 acert.
     
    Jesse24spd, Mar 22, 2025
    Jesse24spd, Mar 22, 2025
    #1
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  3. Mar 23, 2025 #2
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    At your speedo tach module connector, look for tan wire 28B. This is your ignition power in. Check for good voltage at key on. Check wire 14G red wire at same connector for good voltage, this is constant battery supply. Also check white wire 11-GL. This is the modules main ground, check for a good ground connection.
     
    Heavyd, Mar 23, 2025
    Heavyd, Mar 23, 2025
    #2
    QUALITYTRUCK Thanks this.
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