05 western star gauges schematic

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Kenllah, May 7, 2021.

  1. Kenllah

    Kenllah Light Load Member

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    Nov 17, 2017
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    Had the #### plug backwards. From the schematic . Managed to get photos of the plugs in just the right light... 20210507_210033.jpg 20210507_210000.jpg
    Starting over...
     
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  3. Kenllah

    Kenllah Light Load Member

    217
    95
    Nov 17, 2017
    0
    So, at the spedo we have battery power but no ignition power. There is a good ground with no back feed from anywhere. On pin 4 with the lights on there is 8.86v but with the door open it goes to 12+v. Both pins 5 & 6 low voltage data streams check good.

    Data star
    No ignition power but battery power checks good.
    Ground wire checks good continuity wise. Pin for is dead as well "backlight" powered by ignition so expected. Both 5&6 check good low voltage on data bus. So there is no ignition power to either but it comes from the same source . Fuse f20 supplies this traced back to fuse panel . Fixed wire and replaced fuse. It's only 5 amp so it doesn't take much. Too many splices in the factory set up
     
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