Power Probe ECT3000 User Manual page 7

After connecting the transmitter's 20 ft. power lead to the vehicle's battery, a signal is generated through the green signal wire and banana plug.
This is connected to the circuit you want to trace. The signal will radiate along the circuit, which you can detect by using the receiver. There are
two types of circuit signals that the transmitter generates. They are the Grounded Circuit SIGNAL and the OPEN CIRCUIT SIGNAL.
It is very important to familiarize yourself with both of these signals and how they work in your circuit. The "Grounded Circuit signal" and the
"open circuit signal" are different from each other, which you should understand. (See: "Characteristics of the Short/Grounded Circuit Signal"
pg.. 8 and "Characteristics of the Open Circuit Signal" pg. 9&10)
The 2 main features of the ECT3000 is that it transmits a signal into a circuit with the transmitter and then you trace it with the receiver . The
easiest way to insure that you are following the problem circuit is to isolate it from other parallel circuits.
Complete Circuit Signal
Open Circuit Signal
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