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    Author Topic: Electrical Help  (Read 4023 times)

    Offline ShelbyDogg

    • Sr. Resident
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    • Posts: 5007
    Re: Electrical Help
    « Reply #15 on: December 05, 2010 - 10:49:22 PM »
    Simple fix with a Diode.  I did it to tie the 2 circuits together. You can use a small 1 amp diode if you are using it to turn on a 30 or 40 amp relay. Try this:



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    Rob

    3 E-bodies, Megasquirt-1v3.0, Edelbrock Pro-Flo-1, Holley C950, FAST EZ-EFI; say no to carbs...yes to throttle bodies

    My Pace Car restoration thread:
    http://www.cuda-challenger.com/cc/index.php?topic=44869.0



    Offline UKcuda

    • Full Member
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    • Posts: 546
    • Tell them I'm on my way
    Re: Electrical Help
    « Reply #16 on: December 05, 2010 - 11:51:09 PM »
    That's a better idea, I've added a capacitor to ensure the relay stays closed as the key switch passes from crank to run.  Should keep a nice clean power supply to the EFI.  Sorry, I couldn't resist it (capacitor probably needs to be a bit bigger too).
    « Last Edit: December 05, 2010 - 11:52:42 PM by UKcuda »
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    '72 'cuda

    Offline 71Demonz

    • Jr. Member
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    • Posts: 14
    Re: Electrical Help
    « Reply #17 on: December 06, 2010 - 10:13:05 AM »
    ShelbyDogg and UKcuda,
    Now thats what I call some engineering.  I'm going to give it a try.  Otherwise my only other option would have been to replace my stock ignition system with an MSD type.
    Thanks again for all you input.
    Hope to have my engine running soon.  Its a 400 block stroked to 469 C.I.  Dyno'ed at 505 hp and 575 torque.
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    Offline 1970 RT Challenger 1970

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    • Posts: 774
    Re: Electrical Help
    « Reply #18 on: December 06, 2010 - 12:02:00 PM »
    Good stuff!
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