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Silly relay question and...

Discussion in 'Electrical & Audio' started by Frankenchevy, Mar 13, 2019.

  1. Frankenchevy

    Frankenchevy . Supporting Member

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    I’m at the death by a thousand cuts stage of putting my truck back together.
    41A89509-41F0-49CA-A3BF-BCB909B3CD0F.jpeg

    I picked up a brand matching set of relays and the mounting holes are opposite each other. What’s going on here? Do I need to go back to Napa or are they all like this?
    FCA5BD2E-5096-4199-80B0-F094A0A8442F.jpeg 0701BF69-45B9-4D2E-A5C4-E7707E197507.jpeg

    Also, for whatever reason I can’t recall which holes the horn goes into. There is the larger body bolt that mounts it, along with an alignment tab. The are a set of holes that fit the spacing on both sides. I know mine was on the driver side, but wanted to confirm the location before I finalize the front harness and install the grill. Were dual horns an option?
    36060783-17BD-4290-AF45-28DF49F6CBFD.jpeg
     
  2. eskimomann209

    eskimomann209 Full Access Member

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    I’d mount the relay holder then get the relays with the removable metal tab or the ones without tabs altogether
    You don’t need to mount both

    3481EEAF-D4A5-485C-8066-CB44B1B5F67A.jpeg

    8C39E73E-B70A-4819-9B06-6DDDFCE960C9.jpeg

    9D30E124-FE65-49F6-A8A7-39B53930F021.jpeg

    4DB04E62-8734-4839-900C-FB81E6A18EFC.jpeg

    7F4770D5-361E-463E-BD34-2B4DB59E1D4E.jpeg
     
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  3. eskimomann209

    eskimomann209 Full Access Member

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    That’s a 78 core tho so maybe the holes are very different
    I figured they’d be similar but I don’t see one in your core
     
  4. bucket

    bucket Super Moderator Staff Member

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    I agree about the relays. Mount the harness and go tabless on the relays.

    The 70's and 80's had the front harness routed differently, but yes, dual horns were an option.
     
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  5. Frankenchevy

    Frankenchevy . Supporting Member

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    Awesome, thank you! I’ll just trim off the relay’s tab.

    I’m almost positive my horn is rotated 90 degrees from yours based on memory and available holes, though... mine’s mid 80s

    Not that I didn’t like @Snoots reply in my build thread, lol.
     
  6. Craig 85

    Craig 85 Full Access Member

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    Here's how mine are mounted.

    IMG_1646 (2).jpg
     
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  7. Snoots

    Snoots Supporting Member Supporting Member

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    Put a dab of dielectric grease in the relay connector. You won't regret it.
    It helps keep water out and slows corrosion.

    Notice I said 'helps' and 'slows'. Unless you use the road tar that GM uses in the firewall block.
     
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  8. Frankenchevy

    Frankenchevy . Supporting Member

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    Funny you mentioned it. I normally use it on on every electrical connection, but forgot to on those.

    Will do, thanks for reminding me.
     

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