S & G Tool Aid 28100 Computer Safe Automotive Logic Probe

S & G Tool Aid 28100 Computer Safe Automotive Logic Probe

• The S & G Tool Aid 28100 Computer Safe Automotive Logic Probe is S&G's most computer safe circuit tester. It is a high-impedance logic probe that safely tests vehicle circuits (6 / 12 / 24 volt systems) with minimal current draw. It protects sensitive modules while providing clear LED indication of power and ground.
• Features:
  • Current draw < 7 milliamps — minimizes risk to computerized engine, body, and sensor circuits
  • Dual-color LED (red = high/power, green = low/ground) — instantaneous visual circuit status feedback
  • 6 foot heavy duty 18 AWG dual leads with large battery clips — durable reach to battery or test points
  • Insulated probe with 3 ⅜ inch exposed tip plus Protect-A-Terminal probe adapter — prevents damage to connectors
  • Polarity independent leads — can attach leads in any orientation without concern
• Specifications:
  • Manufacturer: S & G Tool Aid (Tool Aid)
  • Part Number: 28100
  • Item: Computer Safe Automotive Logic Probe
  • Electrical Rating: 7 Milliamp (Current Draw)
  • Length: 6 Foot
  • Application(s): Standard, Single Lead Circuit Tester, 6/12/24 Volt System
  • Dual Color: LED Red (Power High), Green (Ground Low)
  • Includes: 3-3/8 Inch Exposed Length Insulated Probe, Protect-A-Terminal, Probe Adapter, 18 Gauge Dual Lead
  • Packaging: Type Carded
• The Computer Safe Automotive Logic Probe can also be referred to as logic probe tester, automotive circuit tester, vehicle logic probe, high impedance probe, and LED diagnostic probe.

Tool Aid’s 28100 logic probe offers a safe, reliable way to diagnose voltage and ground circuits in vehicles. Its high‐impedance design and protective accessories help preserve modern vehicle electronics integrity.

Q: Why is the current draw limit important?
A: Keeping the draw below 7 milliamps ensures the probe does not interfere with or damage sensitive electronic control modules, sensors, or computer circuits.

Q: Can this probe test both power and ground?
A: Yes. The dual-color LED indicates red for voltage/high (power) and green for low/ground, providing clear circuit polarity feedback.

Q: Will it work on older and newer vehicles?
A: Yes. It is suitable for 6-volt, 12-volt, and 24-volt systems, making it useful across a wide range of vehicles and equipment.