A ballast resistor has very little resistance when it is cool (very little current passing through) so a volt reading will show close to 12 v . Now if the points happen to be closed when you turn on the key then the resistor will get hot, ohms will increase, voltage will drop. Last but not least, some starter solenoids have an extra terminal that is only energized when the starter is engaged. Hook that terminal to the coil side of the resister.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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