Current time: 01-22-2017, 07:11 AM Hello There, Guest! (LoginRegister)

Welcome to!

You are currently viewing the board as a guest. Please Register or Login for full functionality

If you registered and did not receive your email validation, please send a contact note to the admin by clicking here and filling out the short form.

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Grounding the hood
Author Message


Posts: 118
Joined: Jul 2010
Region: Europe
Affalterbach / Germany
Reputation: 4

    Post: #1
    question Grounding the hood

    To ground the hood, the factory used a spring like piece of copper sheet that is bolted on top of the upper cowl and scaps against the underside of the hood. If the hood is closed, it is grounded via this spring.

    The spring I have is well worn and ugly. Further, I do not like the idea of something scraping the paint from my hood, even if it is on the underside.

    Did you re-install that spring after your restoration? If not, is there any negative effect to be expected if it is missing (I assume it is there to suppress possible radio interference)?

    If it is advisable to have the hood grounded I think I would prefer some kind of ground strap.

    Thank you, Manfred
    Offline 01-04-2011 11:47 AM
    Visit this user's website Find all posts by this user Quote this message in a reply

    One Too Many

    Posts: 1,289
    Joined: Jul 2010
    Region: Southeast
    Selma Al
    Reputation: 12


      Post: #2
      RE: Grounding the hood

      This is a good question.Waiting to see what the answer well be.
      Offline 01-04-2011 12:08 PM
      Find all posts by this user Quote this message in a reply

      [Image: MItagJeff.png]

      I'll Lock Up

      Posts: 5,709
      Joined: Jul 2010
      Region: North
      Grand Rapids, MI
      Reputation: 39

      Meet and Greet 10 - 14 Shooter

        Post: #3
        RE: Grounding the hood

        Just thinking out loud here. Why does the hood need to be grounded to the cowl when closed? The light (if you have one) operates when the hood is open. That is the only circuit I can think of under the hood. Maybe it's an anti static thing. ???
        (This post was last modified: 01-04-2011 12:36 PM by droptop73.)
        Offline 01-04-2011 12:36 PM
        Find all posts by this user Quote this message in a reply

        [Image: NYtechDan.png]

        My world is fire and blood.

        Posts: 2,995
        Joined: Jul 2010
        Region: Northeast
        New York
        Reputation: 139

        A+ Writing Meet and Greet 1 - 4 Tutorial Coin Shooter

          Post: #4
          RE: Grounding the hood

          well my car didn't have one originally during engine bay restoration in 2007 a friend gave me one, its really just for show it doesn't do anything you can bend your bracket down a little and it won't rub the paint but look like its doing the job by just existing.

          it was suppose to help prevent the hood movement from causing extra electrical radio noise that would come out the the cars radio speakers, but it doesn't do anything really. the hood is grounded through the hood hinges anyway.

          it has no benefit that i could tell when i tried it other then ruining paint under the hood.

          I think the argument was the cars hood is REALLY big and driving it down the road would build up a static charge on the surface, but the hood isn't isolated the front is because it sits the little rubber bumpers and the fenders have the 4 rubber isolators but the back half where the hinge is, is not isolated. the hood is tied into the body with no isolation through the engine bay aprons so i don't understand why they felt the need to install a tiny copper plate that rubs the hood hit or miss depending on age in some vain attempt at discharging the hood through the cowl area, when its grounded on both sides through the hinges into the natural Negative ground of the body. I know they left the hinges untreated raw metal and over time they would rust over but if you opened and closed the hood every so often the rust would break loose and re-establish any lost conductivity.

          I mean if ford was so crazy back then to isolate the electrical system then why not run a wire for ground and not use the body itself and then tie in each piece to the ground directly. lol

          oh and the hood light if you had one was driven by a mercury switch so that little tab does not provide any 12 volt or direct negative tie in for a light. the car body is basically energized all the time since its used as a direct ground back to the battery. the hood light has a 12 volt positive wire that feeds it, but the hood is ground, when the hood is opened the mercury bubble makes contact and the light turns on, 12 volts positive is always flowing through the feed wire regardless if the hood is open or closed, its only when the hood is in the open position that the mercury switch kicks on completing the light circuit at that point the little ground tab on the cowl isn't touching the hood at all.
          Offline 01-04-2011 12:57 PM
          Find all posts by this user Quote this message in a reply

          I'll Lock Up

          Posts: 7,251
          Joined: Sep 2010
          Region: Southeast

          Reputation: 69

          Car of the Month Trophy Shooter

            Post: #5
            RE: Grounding the hood

            rofl everytime I see the one on my uncles before I think about I always tell him "you know you missed a piece during painting" then I get the are you stupid look.
            Offline 01-04-2011 02:09 PM
            Find all posts by this user Quote this message in a reply

            Possibly Related Threads...
            Thread Author Replies Views Last Post
              Hood bumpers, which way? Vinnie 7 332 12-15-2016 10:31 AM
            Last Post: jeremycfr
              A/C wiring under the hood for the compressor Wootdog 10 762 01-16-2016 12:37 PM
            Last Post: Wootdog
              Hood Latch? 73pony 10 696 12-01-2015 03:03 PM
            Last Post: timachone
              Hood Springs and Hinges LCB1 14 1,608 04-17-2015 02:55 PM
            Last Post: 71mach1lady
              Hood spring removal installation tool Jeff73Mach1 10 2,059 03-23-2014 03:37 PM
            Last Post: aypsears
              Hood Hinge Spring Removal? 72Q-code 20 4,131 12-15-2013 04:29 AM
            Last Post: Spechti
              WIERD NOISE UNDER THE HOOD JREID2 6 663 08-05-2013 02:51 PM
            Last Post: 72HCODE
              Trouble under the hood. verdelizard 18 1,451 07-03-2013 10:41 AM
            Last Post: CZ-75

            User(s) browsing this thread: 1 Guest(s)