1970 under dash questions

Discussion in 'Electrical Systems' started by gpm6367, Sep 28, 2019.

  1. gpm6367

    gpm6367 Veteran Member Gold Member

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    293B0738-F3E8-4F25-8389-2C19F0C54F0F.jpeg A3FC1F99-6E5F-44B1-811E-376E64AEFA7E.jpeg

    I know the multi prong is blower motor switch but single black plug?

    And what’s with the blue plug with orange wire into fuse panel? Is that factory?
     
  2. Jim Streib

    Jim Streib https://www.flickr.com/photos/121766713@N04/albums

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    It looks like the blue plug with the orange wire is plugged into the BAT slot ?. If so, it might be for something that needs power all of the time like a clock or glove box light. These type of connectors were used with an unused end not plugged into anything for added accessories to be daisy chained off of that one fuse block slot. The workers on the assembly line or at the dealer wanted to have a setup plug in and not have to splice into any wiring. Doing things like this with plugs allows for some ease of troubleshooting since one fuse protects that terminal as well as other things in the vehicle.
    The other slots in the fuse block could be used for other things like a rear defroster, cruise control, CB radio, and such.
    Jim
     
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  3. gpm6367

    gpm6367 Veteran Member Gold Member

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    Interesting so u think it could be original? Can’t trace it as it goes up into wiring and gets lost.

    What about that solo black plug right next to blower switch?

    Stupid question: do all 70s have underhood, trunk and glove box light?
     
  4. tom3

    tom3 Veteran Member

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    What color wire on that single plug? Thinking tach signal or clock power wire? My 70 RS with deluxe interior has a glove box light, no trunk or underhood.
     
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  5. gpm6367

    gpm6367 Veteran Member Gold Member

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    I’ll have to check but it looks like it’s black wire. My tach works but clock does not; maybe unplugged?

    So not all 70s had underhood or trunk lights. I wonder why mine had them.
     
  6. COPO

    COPO Veteran Member Lifetime Gold Member

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    Under hood and trunk lights were not std equipment. It was an option. I don't have a trunk light but I added an under hood light that works only when the key is on otherwise when working on the car with the engine off, the battery would eventually die.
     
  7. TommyRS70

    TommyRS70 Veteran Member

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    Do you have accessory underdash lamps? Mine plug into Batt. at fuse box.
     
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  8. gpm6367

    gpm6367 Veteran Member Gold Member

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    I do have lights under-dash, glove, underhood and trunk. Trying to figure out why?

    I don’t see a light group on option list.

    7E7DED3E-8C52-4B11-BEE0-54486E3CC028.png invoice.
     
  9. TommyRS70

    TommyRS70 Veteran Member

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    Somehow you got all the extra lighting...ash tray too?
    Maybe dealer purchase....
     
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  10. gpm6367

    gpm6367 Veteran Member Gold Member

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    Ash tray?!? I have to check.
     

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