Godiag GT103 Electric Circuit Tester

Performs every type of service including power injection, measurement, ground testing, polarity checks, continuity testing and components activation
  
With a flip of the output switch, you have positive and negative electricity via the probe for powering up electrical components like cooling fans, relays, etc.
 
Simultaneously uses the hot lead and the ground lead to activate components right in your hand
 
Instantly identifies positive, negative and open circuits
 
Tests for bad ground contacts instantly, allowing you to follow and locate shorts fast without wasting fuses
 
Instantly checks continuity of switches and relays.
 
Circuit breaker protected
 
Built-in flashlight enables you to work in the dark
 
Audio tone indicator allows for no-look menu scrolling once users are familiar with menu tone assignment
 
20ft (can be extended via extendable cable port) cable provides excellent accessibility to test along the vehicle
 
Extremely easy to use and highly reliable

Godiag GT103 Electric Circuit Tester

Performs every type of service including power injection, measurement, ground testing, polarity checks, continuity testing and components activation
  
With a flip of the output switch, you have positive and negative electricity via the probe for powering up electrical components like cooling fans, relays, etc.
 
Simultaneously uses the hot lead and the ground lead to activate components right in your hand
 
Instantly identifies positive, negative and open circuits
 
Tests for bad ground contacts instantly, allowing you to follow and locate shorts fast without wasting fuses
 
Instantly checks continuity of switches and relays.
 
Circuit breaker protected
 
Built-in flashlight enables you to work in the dark
 
Audio tone indicator allows for no-look menu scrolling once users are familiar with menu tone assignment
 
20ft (can be extended via extendable cable port) cable provides excellent accessibility to test along the vehicle
 
Extremely easy to use and highly reliable