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Original Message
Are you running an electronic ignition?
By Bill Conley - 10/10/2005 10:50:05 PM; IP 67.126.142.192
I ran into the same issue wiring an MSD box into my '64 Galaxie. It would fire when I was cranking and then shut off as soon as I let go of the key.

I found out that I had wired the box to the resistor wire instead of the full 12V. These old ignitions get a full 12V when cranking, then the resistor wire drops it down to 8-9V for running the coil (so you don't fry the coil).

The MSD box did not like the low voltage so it would shut down. The fix was to wire the MSD box ahead of the pink resisistor wire.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=25934&Reply=25934><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor25934" onclick="return false;">Mach 1 Starting Issues</a>&nbsp;-- <font color=#0000ff>MC, <i>10/10/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=25934', contentMargin: 60, icon: $('anchor25934') }); </script>  Mach 1 Starting Issues -- MC, 10/10/2005
 RE: Mach 1 Starting Issues -- raycfe, 10/10/2005
 RE: Mach 1 Starting Issues -- Dano, 10/10/2005
Collapse <b>Are you running an electronic ignition?</b>&nbsp;-- <font color=#0000ff>Bill Conley, <i>10/10/2005</i></font>Are you running an electronic ignition? -- Bill Conley, 10/10/2005
 RE: Are you running an electronic ignition? -- walt, 10/11/2005
 RE: Mach 1 Starting Issues -- MC, 10/11/2005
 RE: Mach 1 Starting Issues -- MC, 10/11/2005
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