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Thread: 8784 Ping Control

  1. #1
    Ken Crocie Guest


    i have an old, never used, 8784 ping control that I would like to use on a conventional coil in cap chevy hei.can anyone come up with a diagram?

  2. #2
    msdtechsupport2 Guest


    The ping control will hook up to an HEI distributor however there is a harness needed to install it which is no longer available. If you would like to a schematic please provide us with fax number or mailing address and we’ll gladly send one to you.

  3. #3
    Ken Crocie Guest


    fax# 909-447-4433. Note-I (H-O Racing Specialties) used to be an MSD WD from '75 to '96. I might have the harness in the "old misc. MSD parts drawer". I still have an old"Dynamic Dynomometer",one of your earliest products.

  4. #4
    msdtechsupport2 Guest


    I'll have that diagram on its way. Hopefully you'll have the harness you need. Could it get better than that?

  5. #5
    Ken Crocie Guest


    Received Fax--Thank You
    Ken Crocie

  6. #6
    msdtechsupport2 Guest


    No problem, glad we were able to help.

  7. #7
    Ken Crocie Guest


    Could you please resend the diagram to 909-980-1451. How quckly 5 years go by! The truck has a new Goodwrench 350 in it and I cant remember (oldtimers disease ) the diagram. Thanks

  8. #8
    msdtech22 Guest


    Check your fax machine.

  9. #9


    I need the same wiring diagram for plug the ping control in a HEI Ignition. Anyone can send for me in my e-mail? Thanks for the help!

  10. #10
    Join Date
    Jan 2010
    Brisbane, Australia


    How about posting the diagram on here so we can all see it. There's no secrets here, is there? Gary
    Regards, Gary

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