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Got a question on wiring a msd box up

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Got a question on wiring a msd box up

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Old 08-03-2011, 09:02 PM
  #1  
MikeCobb
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Default Got a question on wiring a msd box up

I have a 95 mustang gt with the 5.0 ho i did the efi to carb swap. I have a digital 6al box and when i try to crank it if i turn the key fast as i can it will crank but if i wait any amount of time or it doesnt crank on first spin of motor it will just turn over and not crank. Then i can wait for say 15 seconds until the msd box cuts off and retry it will crank up or do the same thing till msd box resets. Where do i need to get my power from on my msd box so it will get power with key in starting and run position i guess is what im looking for any help would be great
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Old 08-03-2011, 09:59 PM
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tohoopty
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go to msd website.it shows how to wire them up
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Old 08-04-2011, 03:01 AM
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4rdnut
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the heavy red wire goes to positive battery post and the thin red wire goes to key on 12 volt source.
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Old 08-04-2011, 08:49 PM
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MikeCobb
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ok got a keyed 12v power but now car doesnt cut off when you turn key off it runs maybe 6 seconds then cuts off
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Old 08-04-2011, 08:57 PM
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grabbem88
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I put mine on the solenoid
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