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Thread: LWB Gauge Wiring

  1. 07-23-2014, 05:31 PM #1
    37yrold911
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    LWB Gauge Wiring

    One of the last LWBs in fact - a 1973.5 CIS car, tho I suspect that does not make a difference...

    I got my gauges back from being refurbished and am now trying to connect them up again. I took photos of each one and also drew diagrams of the connections. Too bad some of the wires blocked the view of some other wires on some pics...

    My question is about the Oil Temperature gauge. It seems like a solid green wire goes to a grounded terminal on the back, which is not kosher DIN is it??
    (Yes, that's green, not brown).

    The wiring diagram is not helpful as it just shows a curved half-circle as the termination of the wire.

    So, where does the solid green wire go?
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  2. 07-23-2014, 05:42 PM #2
    ESully
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    Spare wire. It's only used on Sportmatics.
    E Sully
    1973.5 911T
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  3. 07-23-2014, 06:20 PM #3
    Fishcop
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    What does it do on a sporto Ed?
    John Forcier
    EarlyS #1987
    1968 911 Race Car "Grun Hilda"
    1969 S/T interpretation "Blau Healer"
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  4. 07-23-2014, 08:24 PM #4
    37yrold911
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    My car is a 5 speed.

    Should it be taped up? It wasn't taped up originally.

    Should it be connected to the gauge ground (i.e. the shell)?
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  5. 07-23-2014, 08:37 PM #5
    Haasman
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    Would this help?

    Name: Screen Shot 2014-07-23 at 9.36.18 PM.jpg Views: 150 Size: 112.0 KB
    Haasman

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  6. 07-24-2014, 12:25 AM #6
    Fishcop
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    Quote Originally Posted by Haasman View Post
    Would this help?

    Name: Screen Shot 2014-07-23 at 9.36.18 PM.jpg Views: 150 Size: 112.0 KB
    Nope - those wiring diagrams don't seem to include the sporto looms...
    John Forcier
    EarlyS #1987
    1968 911 Race Car "Grun Hilda"
    1969 S/T interpretation "Blau Healer"
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  7. 07-24-2014, 02:00 AM #7
    classic
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    Quote Originally Posted by Fishcop View Post
    What does it do on a sporto Ed?
    It's for the oil temp light incorporated in the Sporto oil temp gauge.
    Tony
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  8. 07-24-2014, 04:04 AM #8
    Fishcop
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    Okay, that could explain a few things! I had my sporto gauge converted at NHS, so the warning light must have been deleted.
    John Forcier
    EarlyS #1987
    1968 911 Race Car "Grun Hilda"
    1969 S/T interpretation "Blau Healer"
    Restoration Saga
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  9. 07-24-2014, 04:32 AM #9
    ESully
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    Here is the Sporto wiring from the 73.5 diagram. It is included in the wire harness even if not Spormatic. Green wire sits unconnected behind my oil gage.


    Name: new-1.jpg Views: 174 Size: 117.1 KB
    E Sully
    1973.5 911T
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  10. 07-24-2014, 12:35 PM #10
    classic
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    John,

    The light is in the oil temp side of the gauge, so I NHS fitted a numbered oil temp cluster, then the light socket would have been removed, as it's part of that section.

    The Sporto gauge has an extra globe socket at the top of the oil temp cluster section...... No photos sorry.
    Tony
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