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Reload Thread: Doing the big 3... should I ground from the alt casing to batt- or from engine block

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    Doing the big 3... should I ground from the alt casing to batt- or from engine block

    to chassis

    I've heard people say both ways, not sure which is better. Also where on the alt casing/engine block do I ground? Not really sure, I'm still new to working on cars so I want to make sure I'm not doing something stupid. Pictures would be great. I've tried searching around, but haven't found anything that clearly answers my question.







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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    When you pull your alt off take a mounting bolt and attatch your ground to it then go to batt neg ill grt you a pic of mine 1 sec



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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Doing the big 3... should I ground from the alt casing to batt- or from engine block-20121007_163126.jpgDoing the big 3... should I ground from the alt casing to batt- or from engine block-20121007_163133.jpg

    you should be able to clearly see my positive on the brass bolt and the other lug under the grey headed bolt is my ground from alternator mounting bolt to battery negative



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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    So can I put it here? or will this not work?





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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    yeah that should work just make sure your alt is making good non rusted contact to bolted surface



    headunit : Sony xab-601bt
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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Quote Originally Posted by cdc351jeferson View Post
    yeah that should work just make sure your alt is making good non rusted contact to bolted surface
    How should I make sure that it is? Sorry for the stupid questions haha




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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    well where your alt is touching that rusted piece just make sure theres no rust between the alt and that where the 2 touch each other . if need be remove your belt just off the alt pull all the bolts to take a peek where the 2 meet and see if its metal to metal and not metal to rust then put your lug under the bolt head and tighten it up good



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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    watch this vid,should answer your questions,and done properly
    Car Audio 101 - The Big 3 Upgrade Tutorial - YouTube




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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Quote Originally Posted by cdc351jeferson View Post
    well where your alt is touching that rusted piece just make sure theres no rust between the alt and that where the 2 touch each other . if need be remove your belt just off the alt pull all the bolts to take a peek where the 2 meet and see if its metal to metal and not metal to rust then put your lug under the bolt head and tighten it up good
    That sounds like a real PITA to go through just to attatch a ground wire to the engine block and to a strut/shock bolt?




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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Not really little extra work and it looks clean . Different strokes for diff folks



    headunit : Sony xab-601bt
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    box : Bill Fitzmaurice Truck tuba DD 600series 10"
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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Ok so it turns out that bolt is too thick for my ring terminals. I don't know where I can get any other ones right now so would one of these bolts work instead? They're pretty convenient as they are right by my batt, but I'm not sure if they would be any good.





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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Yea man one of those should work



    headunit : Sony xab-601bt
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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Just to be sure to route the wire away, and to the side of the pullys,so they dont get in the way




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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Alright got everything in guys. Seems to be good so far. Car stays above 14v even when the bass is hitting hard and I'm idling around 600 rpms now. Car just seems to run smoother too. Glad I took the time to do this.




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    Re: Doing the big 3... should I ground from the alt casing to batt- or from engine bl

    Electrically speaking, alt casing and engine block are the same piece of gear.




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