S&G Tool Aid
S&G Tool Aid 21700 Circuit Master(R) Automotive Circuit Tester.
"Circuit Master" is the modern universal circuit tester for all vehciles. Use to test all primary electrical circuits plus any on-board computer systems.
Test computer circuits without fear of causing damage to expensive electronic components. Completely safe to use on microprocessor control modules.
Operating range from 3-15 volts. Current draw is less than 21 milliamps at 12 volts D.C.
Long life LED glows when voltage is sensed at probe and indicates polarity : Red = + (Positive) Green = - (Negative).
Use to locate shorts, opens and intermittents.
Made of high impact chemical resistant plastic.
Supplied with a 4 foot ground wire.
All solid state construction.
"Circuit Master" is supplied with Protect-A-Terminal, Probe Adapter (Part No. 21713), which will not deform sensitive female terminals at computer connections.
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