‎Electronic Specialties LOADPRO Dynamic Meter Lead Operating Manual

‎Electronic Specialties LOADPRO Dynamic Meter Lead

Using LOADpro Dynamic Meter Leads with your digital voltmeter

This is NOT a special tool. This is a set of normal VOLTmeter leads that has a special function of locating high resistance in wiring by applying a 40mA/V dynamic load with EVERY VOLTAGE TEST. Remove your normal voltmeter leads and install these. Works with any digital voltmeter with standard banana plugs.

Electronic Specialties Incorporated P/N 180 139 Elizabeth Lane Genoa City, WI 53128 800-227-1603 • 262-279-1400 • fax 262-279-1300 WWW.ESITEST.COM

General Information

LOADpro Voltmeter Leads are designed to replace the load in an electrical circuit so a load test (voltage drop test) can be made with the component removed. This is the best way to make the initial test. The normal drop in a clean circuit varies, and you’ll need to develop a sense of how much drop constitutes a fault. A drop of 0.5V in a 12V system is an effective resistance of 5Ω. See page 5 for more information.

Things To Consider

• The digital VOLTmeter function in the multimeter is the best diagnostic tool you can use. The system voltage is more powerful than the 3V the ohmmeter supplies. Testing with voltage drop is more accurate and easier.
• Don’t use the LOADpro Probe (positive) in the negative side of the circuit. You may inadvertently operate a component switched in the ground.

Testing your LoadPRO Leads

Install your LOADpro Leads into your digital meter, and set the meter to measure Ohms (Ω). DO NOT TOUCH LEADS Together. Depress the LOADpro button. Your meter should read approximately 25Ω. If the reading is outside of this range or reads 0Ω or OLΩ, your LOADpro Leads are not working. Contact us for warranty service – 800-227-1603.

Warnings and Cautions

1. Primarily designed as a replacement for the component.
2. Don’t use the LOADpro Probe (positive) on the negative side of the circuit. You may inadvertently operate a component switched in the ground. Know where you are!
3. Use up to 28.5V (DC or AC) only. Max 5-8 seconds per test – prolonged use may overheat/damage LOADpro.
4. Not for computer (ECM) INPUT circuits. This tool has been tested successfully and will test computer (ECM) sensor driver circuits (B+ and Gnd/Return).
5. Not designed for high-voltage circuits.
6. Do not use a positive LOADpro probe (on the negative side of the circuit. Use the BLACK lead on the ground with the LoadPRO probe energized (powered “test light” mode – see page 3)
7. Use only with the DIGITAL VOLTMETER
8. LOADpro will not function with AMMETER or OHMMETER

How To Calculate LOADpro Amp Draw

1. Measure your LoadPRO voltage
2. Divide by 100 – this is the mA draw
3. Example – 5VDC ÷ 100 = 50mA

How To Calculate Your Actual Circuit Resistance See chart on Page 5 (Advanced Testing)

1. Measure your actual system voltage
2. Measure LOADpro voltage
3. Divide LOADpro Voltage by 100 – this is the LOADpro Amperage
4. Subtract voltage 2 from voltage 1 — this is the resistance voltage drop
5. Divide resistance voltage drop by LOADpro Amperage — this is the circuit resistance (Ω). V÷A=Ω
6. Multiply the circuit resistance (Ω) by your normal circuit amperage — this is the actual voltage drop.

USE LOADpro! It finds problems you might normally miss!

1. Read VOLTAGE like you normally do.

2. Push button.

3. Read VOLTAGE again.

4. Did VOLTAGE drop?
   If yes you have a problem with the wire.

5. Did VOLTAGE NOT drop?
   The wire is clean.

6. See the next page for specific instructions and see page 5 for resistances if you need to.

Here’s How Simple The Process Can Be…

There are ONLY 3 FAULTS THAT CAN OCCUR IN A SINGLE WIRE:

1. OPEN
2. SHORT-TO-GROUND
3. HIGH RESISTANCE

Basic System Test Procedure:

1. Disconnect the load component (light bulb, etc.) from the wiring harness.

2. Insert both the LOADpro probe and the negative probe into the wiring harness connector. See the diagram below for polarity.

3. Read the system voltage and compare it to the manufacturer’s specifications. Zero (0.000) volts, is a SHORT-TO-GROUND in the positive circuit. GHOST voltage is an OPEN circuit in either the positive or negative circuit. To determine if the OPEN is on the positive or negative circuit: Move the black lead to a known good ground. If the voltage rises to mfr. specs, the OPEN is in the ground side of the circuit. If the ghost voltage remains, then the OPEN is on the positive side. System voltage, the circuit is complete but may have HIGH RESISTANCE (see next step)
   To test for HIGH RESISTANCE in the positive or negative circuit:

4. Depress the LOADpro probe button (maximum of 5 to 8 seconds). If the system voltage does not change or drops very little, the wiring is good If the voltage drops, there is HIGH RESISTANCE in the wiring circuit. To determine if the HIGH RESISTANCE is on the positive or negative circuit;

5. Move the black probe to a known good ground and repeat step #4. If the voltage drops, then the resistance is in the positive side of the circuit. If system voltage is present, then the resistance is on the ground side of the Circuit.

Ghost Voltage- When the DMM is set to the lowest DC Millivolts scale, the reading appears to float around and shows random readings. This happens because the test circuit is “open”. Touch your test probes together and the DMM reading will ZERO itself. When you touch the DMM test probes together, you have “closed” the test circuit. Using this characteristic of your DMM can help you find open circuits.

TESTING FOR RESISTANCE IN THE POSITIVE

1. Use the positive LOADpro Probe in the RED side of the circuit
2. Use the LOADpro Leads just like a test light – black to ground, and test with the LOADpro Probe.
3. Break the circuit at connectors as needed to test each segment
4. Depress the LOADpro button with each voltage test
5. Any voltage drop indicates a problem (high resistance) in the circuit.

Think of LOADpro Voltmeter Leads as a “powered test light”. If you are looking for a big resistance problem (corrosion) in positive, clip the black lead to the ground and check the positive wires with the LOADpro probe. If you’re looking for a ground problem, clip the LOADpro probe to a clean voltage source, and check the ground connections and wires with the black probe.

TESTING FOR RESISTANCE IN THE NEGATIVE

1. Use the LOADpro Leads just like a POWERED test light – connect the LOADpro probe to a clean voltage supply.
2. Use the black probe in the ground circuit to check for “bad ground”. Break the circuit as needed to test each segment
3. Depress the LOADpro button with each voltage test
4. A constant voltage means the ground is clean.
5. A drop in voltage means the ground has high resistance (corrosion).

Use the RED lead on the RED side (positive) and the BLACK lead on the BLACK (negative) side. Using the LOADpro Probe (positive) in ground wires doesn’t work. Attach the LOADpro Probe to a clean voltage supply.

Your Ω (Corrosion) for Your System Voltages LOADpro Voltage is read with the LOADpro button depressed

Warranty Information

This product is warranted to be free from defects for one year. If this product fails during the first 12 months due to faulty materials or workmanship, it will be repaired or replaced free of charge, at the discretion of the manufacturer.

For warranty and service coverage, please return this product to your dealer for processing and evaluation. OR, return it directly to Electronic Specialties, Inc. 139 Elizabeth Ln. Genoa City, WI 53128 262-279-1400 Fax 262-279-1300 WWW.ESITEST.COM Defective units being returned to your dealer or to the factory should include proof of purchase date. Any testers that do not function due to misuse or abuse will be subject to “out of warranty service charges.

FREQUENTLY ASKED QUESTIONS

What is the Electronic Specialties LOADpro Dynamic Meter Lead?

The Electronic Specialties LOADpro is a dynamic meter lead designed for automotive electrical testing. It is a versatile tool used for diagnosing electrical issues in vehicles.

How does the LOADpro Dynamic Meter Lead work?

The LOADpro works by applying a dynamic load to the circuit under test, allowing users to perform voltage drop tests without turning the circuit off. This helps identify voltage drop issues and locate faults in automotive electrical systems.

Is the LOADpro compatible with all types of vehicles?

The Electronic Specialties LOADpro Dynamic Meter Lead is designed for use with a variety of vehicles, including cars, trucks, and other automotive applications. Users should ensure compatibility by checking the product documentation.

What types of electrical tests can be performed with the LOADpro?

The LOADpro is versatile and can be used for various electrical tests, including voltage drop testing, circuit integrity checks, and diagnosing high- resistance connections in automotive electrical systems.

Can the LOADpro be used for testing both AC and DC circuits?

The Electronic Specialties LOADpro is primarily designed for testing DC (direct current) circuits commonly found in automotive systems. Users should refer to the product documentation for specific details on its capabilities.

What is the operating voltage range of the LOADpro?

The operating voltage range of the LOADpro is an important specification that indicates the range of voltages it can effectively test. Users should check the product specifications for information on the operating voltage range.

Does the LOADpro require an external power source?

No, the Electronic Specialties LOADpro is designed to be powered by the vehicle's electrical system during testing. It does not require an external power source, providing convenience for users during diagnostics.

Can the LOADpro be used for testing different types of circuits, such as lighting or sensors?

Yes, the LOADpro is versatile and can be used for testing various circuits in vehicles, including lighting circuits, sensors, and other components. It provides a convenient solution for diagnosing electrical issues in different parts of the vehicle.

Is the LOADpro suitable for use by professional mechanics and technicians?

Yes, the Electronic Specialties LOADpro is suitable for professional mechanics and technicians who perform electrical diagnostics on vehicles. Its advanced features and capabilities make it a valuable tool for identifying and troubleshooting electrical problems.

What is the length of the lead on the LOADpro?

The length of the lead on the Electronic Specialties LOADpro Dynamic Meter Lead is specified in the product documentation. Users should check this length to determine the reach and flexibility of the lead during testing.

Can the LOADpro be used for testing circuits with high current loads?

The LOADpro is designed for low to moderate current testing and is not intended for testing circuits with high current loads. Users should follow the product guidelines for proper usage.

What safety features does the LOADpro have?

The Electronic Specialties LOADpro may include safety features such as overcurrent protection and insulated grips to ensure the safety of the user during testing. Users should check the product documentation for information on safety features.

Is the LOADpro easy to use for beginners and DIY enthusiasts?

Yes, the LOADpro is designed to be user-friendly, making it suitable for beginners and DIY enthusiasts who want to perform electrical testing on their vehicles. It provides a straightforward solution for diagnosing common electrical issues.

Can the LOADpro be used for testing battery circuits?

Yes, the Electronic Specialties LOADpro is suitable for testing battery circuits in vehicles. It can help diagnose issues related to battery voltage drop and identify problems with battery connections and cables.

What is the warranty coverage for the LOADpro Dynamic Meter Lead?

The warranty typically range from 1 year to 2 years.

Can the LOADpro be used for testing circuits in hybrid and electric vehicles?

While the LOADpro is primarily designed for traditional internal combustion engine vehicles, it may be suitable for testing certain circuits in hybrid vehicles. Users should refer to the product documentation for specific details.

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