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  1. #1
    Join Date
    Feb 2014
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    SoCal
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    Msd 6a power supply

    I just relocated my battery to the trunk with 1/0 gauge wire and now need a place to supply power to the msd box. Can I run the wire to the starter power supply or do I need a dedicated supply?



  2. #2
    Join Date
    Mar 2007
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    Florida
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    A good + connection at the starter should work fine. If you decide on dedicated to the trunk go up a wire size.

    I've seen more problems with poorly grounded boxes. Unless you're running a heavy gauge negative battery cable to the engine compartment you can connect the - wire from the MSD box to, I'd run a dedicated wire (bigger gauge) to the - battery in the trunk. Counting on a ground path through sheet metal, bolts, etc. to get back to the battery often causes problems which is why MSD wants to see the box + and - connected directly to the battery.

  3. #3
    Join Date
    Feb 2014
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    SoCal
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    Quote Originally Posted by NOT A TA View Post
    A good + connection at the starter should work fine. If you decide on dedicated to the trunk go up a wire size.

    I've seen more problems with poorly grounded boxes. Unless you're running a heavy gauge negative battery cable to the engine compartment you can connect the - wire from the MSD box to, I'd run a dedicated wire (bigger gauge) to the - battery in the trunk. Counting on a ground path through sheet metal, bolts, etc. to get back to the battery often causes problems which is why MSD wants to see the box + and - connected directly to the battery.

    Ill make sure to ground in a few places and one being the frame. I have 1/0 gauge for positive and negative. Thank you

  4. #4
    Join Date
    Dec 2010
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    Northern Virginia
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    The starter terminal will work but I have a 1ga cable from the trunk to the front routed inside the body up to the firewall. On the firewall I have a bulkhead connector to route the power into the engine compartment. I have my 6AL box taking power from the engine side of the bulkhead connector with a short 18" 1ga cable continuing to the starter terminal.
    Steve Hayes
    "Dust Off"
    68 Camaro

    Speed has never killed anyone. Suddenly becoming stationary, that's what gets you!
    "Jeremy Clarkson"