Power and ground

Discussion in 'Electrical and Ignition' started by Evan Dutch, Dec 2, 2018.

  1. Evan Dutch

    Evan Dutch Well-Known Member

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    What do you guys do when running electric accessories; fans, aftermarket ignition, etc. but you don’t want to run all your power and ground wires directly to the battery terminals that way there aren’t tons of wires on the terminals.

    Is there a panel I can run battery power to and then run all my accessory to that Panel that way it’s neat?

    Thanks
     
  2. TrailBeast

    TrailBeast Slightly Twisted Member

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    They are called power panels.
    I ran a 10ga wire off my starter solenoid to a breaker with studs and nuts on it, then run accessories off that.

    Here's a Google search for 12 volt power panel. 12 volt power distribution panel - Google Search
     
  3. Willyrd

    Willyrd Well-Known Member

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    You could do a battery to body ground so you can just do chassis grounds
     
  4. Evan Dutch

    Evan Dutch Well-Known Member

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    Ah, so it’s similar to a bus bar?
     
  5. toolmanmike

    toolmanmike FABO Staff Staff Member FABO Gold Member

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    Only Buss bars are for grounds and don't have fuses.
     
  6. Evan Dutch

    Evan Dutch Well-Known Member

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    So I could pull power for the accessories from the power panel and then ground them all to a common buss bar.
     
  7. toolmanmike

    toolmanmike FABO Staff Staff Member FABO Gold Member

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    If you choose. Cars have used chassis grounds for years. The battery negative is grounded to the block and usually the radiator support. The block is grounded to the body at the firewall. Everything that is metal that is attached to metal is automatically grounded. You can run 2 wires and ground one if you wish.
     
  8. Evan Dutch

    Evan Dutch Well-Known Member

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    Thanks
     
  9. 67Dart273

    67Dart273 Well-Known Member

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    The problem with chassis/ body grounding is "now." "Now" we have lots of sensitive electronics, and you can get into "ground loops" which can cause interesting problems. Unfortunately, tho, many of the electronics themselves are not properly set up to deal with this.......stereo/ cb/ radio equipment, etc.

    A "single point ground" like "think (wood, glass) boats" where you have NO ground, just a positive and negative terminal

    If you have a fairly conventional "simple" car with just lights, ignition, etc, you are pretty safe. You get into EFI, data loggers, and other electronics, it gets more difficult

    MSD has/ did have an article on interference. It is possible for example, for the spark produced by an MSD to re-trigger it's own unit, creating false spark timing. This high powered spark can affect other "stuff" like the voltage regulator!!!
     
  10. Evan Dutch

    Evan Dutch Well-Known Member

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    I’m running a msd 6al box, what’s the best way to ground it? Instructions say right to the battery.
     
  11. 67Dart273

    67Dart273 Well-Known Member

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    That. and run your trigger wires close to a "ground plane" that is along the block and firewall, try to cross plug wires at right angles to the trigger, and keep them away