Coil tester and Polarity
- Thread starter rockfla
- Start date
alexiskai
Well-known member
rotorwrench
Well-known member
They are polarity sensitive in the same respect as they are in situ. A coil will work either way it's connected but it's only efficient when connected per the polarity of the battery. Most coil terminals are labeled +/- but some manufacturer's just don't care.
The positive side is connected to the input of the primary winding but the negative side is connected to both the input side of the secondary winding and the output of the primary and it is labeled as such. An Ohm meter can be used to check between the high tension tower terminal and one of the primary terminals at a time to see readings from both sides. The one primary terminal with the highest ohm reading is the negative side. The other should read the same as the primary winding by itself. Coils come in many different ohm levels but the most common are 1.5 ohm and 3.0 ohm. The 1.5 is adequate for 6-volts systems and the 3.0 for 12-volt systems with no external ballast.
The positive side is connected to the input of the primary winding but the negative side is connected to both the input side of the secondary winding and the output of the primary and it is labeled as such. An Ohm meter can be used to check between the high tension tower terminal and one of the primary terminals at a time to see readings from both sides. The one primary terminal with the highest ohm reading is the negative side. The other should read the same as the primary winding by itself. Coils come in many different ohm levels but the most common are 1.5 ohm and 3.0 ohm. The 1.5 is adequate for 6-volts systems and the 3.0 for 12-volt systems with no external ballast.
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rockfla
Well-known member
PERFECT, thank you very much!!
Thank as well rotorwrenc, I knew it best to keep the polarity the same with the coil but wasn't sure about the tester??
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