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  •  » Prep for ground wire

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    4/09/2026 12:50 PM  #1

    687072mustang
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    From: Monroe WA
    Registered: 4/01/2013
    Posts: 186

    Prep for ground wire

    Someone  pictured (In a post a l o n g time ago )  a tool to clean the area for ground wire installation. Anyone know what it is called or have number / link for it? Tanks

     

    4/09/2026 1:26 PM  #2

    Ron68
    Senior 24-7 FYI Addict

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    From: Mukilteo, Washington
    Registered: 4/01/2013
    Posts: 1,761

    Re: Prep for ground wire

    Steve - check out eBay and look for a bonding brush. It has a pilot stud that fits in your screw hole and a captured stainless steel brush that cleans the area around the hole down to bare metal. 
    https://www.ebay.com/sch/i.html?_nkw=bonding+brush&_sacat=0&_from=R40&_trksid=p4624852.m570.l1313

    68 coupe - 351W, 4R70W, 9" 3.25 -- 65 convertible - 289 4v, C4, 8" 3.00
     

    4/10/2026 2:15 PM  #3

    John Ha
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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 1,043

    Re: Prep for ground wire

    687072mustang wrote:

    Someone  pictured (In a post a l o n g time ago )  a tool to clean the area for ground wire installation. Anyone know what it is called or have number / link for it? Tanks

    A small piece of sandpaper does wonderful work and it's cheap too.

    Founding Member of the Perpetually Bewildered Society
     

    4/10/2026 3:51 PM  #4

    Rudi
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    From: Stuck in the 50's Welland Ca
    Registered: 4/01/2013
    Posts: 4,102

    Re: Prep for ground wire

    I don’t like sanding the paint off, that makes a rust magnet.
    All I’ve done mostly is use a heavy duty star washer under the connection with a blob of bulb grease.

    Good work ain't cheap, Cheap work ain't good!
     

    4/11/2026 5:51 AM  #5

    BobE
    Senior 24-7 FYI Addict

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    From: White Plains, NY
    Registered: 4/04/2013
    Posts: 2,998

    Re: Prep for ground wire

    A ‘bonding brush’.  Interesting, I hadn’t heard or seen, these before.  Good to know. 
    I’ve typically have used sandpaper to clean the area; you can tape off the area so as not to take off more paint then necessary.  And agree that the addition of a star washer helps with the connection. 

    65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
     

    4/11/2026 9:08 AM  #6

    Raymond_B
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    From: Fort Worth, TX
    Registered: 4/01/2013
    Posts: 1,273

    Re: Prep for ground wire

    You can paint the whole thing after you bolt the wire down. Or you can use a rivnut. At the end of the day you want a clean metal-to-metal contact not a metal-paint-metal contact.

     

    4/11/2026 11:35 PM  #7

    Ron68
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    From: Mukilteo, Washington
    Registered: 4/01/2013
    Posts: 1,761

    Re: Prep for ground wire

    I used bonding brushes for many years on aircraft. Clean up around the hole, install the ground wire and then seal the whole thing with some good quality sealant. 

    68 coupe - 351W, 4R70W, 9" 3.25 -- 65 convertible - 289 4v, C4, 8" 3.00
     

     

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