Tractor Repair: 8N Ignition-No spark, starter solenoid, coil tester

Question
Ford 8N 1952 Ser. No. 8N462951  I'm a novice mechanic. The engine turns
over, but  I don't get spark to the spark plugs.  I've checked for spark  by
removing one sparkplug and grounding it to  the manifold while I turn over
the engine.  No spark.  I've checked, the points, and the distributor cap.  They
seem to be in good condition.  The points function when I turn over the
engine. No visible spark.  I don't know the condition of the condenser and the
coil.  I've checked the wiring and it seems to be in order.  How can I start at
the battery (new) and systematically check the wiring to find the problem?  
Does the regulator have anything to do with the ignition spark?  The tractor
set outside in the weather for about four years without being started.

Answer
Hello,

  You will need to use a test light or voltmeter to see where you have power and where you don't.  Turn the ignition switch on and see if you have power at both terminals of the switch.  If you have power at one terminal but not both terminals, the switch is bad.  If you don't have power to either terminal, there is a problem in the wiring that supplies power from the battery cable terminal on the starter solenoid up through the amp gauge and to the switch.  If you have power to and from the switch, check for power at the coil.  If there is none, there is a problem in the wiring or the ignition resistor behind the dash is bad.  If you have power to the coil, then possibly the coil is bad.  Either try a different coil or have the old one tested if you can find a shop that still has a coil tester.  If it is a 1952 model, I will assume it has the side distributor and not the old style front distributor.  The wires between the coil and the distributor should be tested also.  The regulator is only for the charging system and does not apply to the ignition system.  

                 Good luck,

                      Arnie