Question about Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: WHAT IS VOLTAGE FROM PCM TO COIL
I am assuming you have the 4.0 engine with no distributor.
The red and lite green wire to the coil is battery voltage (12VT) from the key switch. The three yellow wires are from the PCM and will be something less than 6 volts or grounds. They signal the coil when to fire the plugs.
Posted on Jul 24, 2012
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