Tool Review: Thexton Circuit Energizer

April 12, 2022
Reviewed by Brin Kline shop owner/technician at Assured Auto Works in Melbourne, Fla.

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Q: How did the tool function as far as saving you time?

A: There are three test lead options that can be swapped quickly due to the connector design. Perhaps the biggest benefit is having three switch positions. The default position is off but switching between left and right will allow for reversing polarity to the component being tested.  

Q: How has using this tool impacted your shop’s profitability?

A: Being able to provide battery voltage and/or a ground path to a component for testing purposes is not a new concept but having the ability to swap out between the three provided test lead options can and has been a time saver. Efficiency = profitability. But again, being able to switch polarity due to the multi-switch position means not having to change the lead configuration during the test.  

Q: What kind of setup was involved before using the product?

A: No setup is required other than removing the product from the packaging and getting familiar with the tool.  

Q: How easy was it to use?

A: The Thexton Circuit Energizer, No. 852, is very easy to use.  

Q: How was its packaging? Did it come with any accessories?

A: Disposable packaging. The tool came with three test lead adapters and two alligator clip/back probes.  

Q: Was there a manual included?

A: Yes, it came with a manual. The tool is self-explanatory so although it’s nice to have the manual, I don’t think it would be required in most cases.

Q: What features did you like?

A: I like the interchangeable test leads and the ability to change the polarity.  

Q: Is there any way you could think to improve or add to this tool?  

A: I would like to see longer battery/power source leads. The battery/power source leads are about two feet long.  

I’d also love to see Thexton come out with an upgraded version that can have an option for pulse width activation as opposed to just an on and off activation.  

Last but not least, it would be a deal changer if Thexton could add one more test lead with banana leads. Most test lead kits have banana leads.  

Q: What types of jobs did you use this tool for?

A: We tested radiator fans, blower motors, window motors, and even a variable cam timing solenoid.  

Q: How does this tool compare to other tools you’ve used like it?  

A: I have used similar products that measure and display circuit activity along with other test functions. The interchangeable test leads and the ability to quickly reverse polarity is what sets this tool apart. Other tools I’ve used will reverse polarity to the test probe but the ground lead is always a ground lead.  

Q: On a scale of 1 to 10, how would you rate this tool overall? Why? 

A: I would rate this tool an 8. There are other component activation tools on the market but this one does have some features that make owning one nice. This is just another great tool to add to your arsenal.   

 *Note: This product was given to the reviewer free of charge from the manufacturer.

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