Re: farmall H, 12V resistor smokes after wiring l

Posted by Bob M on May 20, 2005 at 10:43:42 from (151.190.254.107):

In Reply to: farmall H, 12V resistor smokes after wiring light posted by arod on May 20, 2005 at 09:57:46:

Arod - A smoking ballast resistor can mean a couple things:

1 - You somehow got a drop of oil or similar onto the resistor. The smoke is the stuff being burned off by the hot resistor. (Note: It's normal for a new resistor to smoke for a minute or two the first time it is powered up.)

2 - Your new light wiring somehow managed to ground the coil side of the resistor. Now when you pull the ignition switch this fault current passes thru the resistor causing it to heat up.

Suggest this: Temporarily disconnect the wire between the resistor and the ignition coil at the coil terminal. Now turn on the ignition. If the coil doesn't heat up/smoke with the wire disconnected, there is no problem. Reconnect the wire and forget about it.

However if the resistor still smokes with the coil wire disconnected, begin looking for a short somewhere.

Follow Ups:

• Re: farmall H, 12V resistor smokes after wiring l arod 11:00:12 05/20/05 (6)
  • Re: farmall H, 12V resistor smokes after wiring l Bob M 11:20:39 05/20/05 (5)
    • Re: farmall H, 12V resistor smokes after wiring l captaink 12:06:12 05/20/05 (0)
    • just to be sure.... is this correct ? arod 12:05:41 05/20/05 (2)
      • Re: just to be sure.... is this correct ? captaink 12:10:17 05/20/05 (1)
        • Re: just to be sure.... is this correct ? arod 12:15:06 05/20/05 (0)
    • Re: farmall H, 12V resistor smokes after wiring l arod 11:44:44 05/20/05 (0)

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