Posted by Bob Kirk on November 25, 2008 at 13:52:06 from (74.46.243.186):
My 1955 IH 300 utility has been known for starting first time every time. But lately, including today, it has failed to fire at all after sitting for a week or two. I have replaced all ignition parts including the coil, but today again there is no "pop" at all.
But as soon as I hooked a hot wire from the positive side of the battery to the positive side of the coil, she fired right up.
Something in the back of my mind tells me that this means the ignition switch is bad or I have a bad wire between the switch and the coil.
Is this correct? Can I identify which wire runs to the coil just by looking at the back of the switch?
This tractor is 12 volt, negative ground. It has some kind of ceramic gizmo mounted on top of the coil that the positive side wire goes in and out of -- I think for regulating voltage to the coil? Could this gizmo be my culprit?
By the way, is there any downside to running the tractor temporarily with a hot wire from the battery to the coil?
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