Circuit Buddy

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Circuit Buddy Circuit Buddy: The essential automotive tool featuring an LED Test Light and Safety Probe for standard multimeters. More details @ www.circuitbuddy.net

Perfect for reaching difficult, corrosion-free areas like under-dash wiring with precision. Circuit Buddy is an auto-electric testing device used for two purposes - to test fuses and to pierce wires to find live circuits. The unit can be used with one hand and can also be locked to retain hands-free contact when piercing wires. The Circuit Buddy can also be used as a normal test light and makes it

easy to get to difficult-to-reach contact points. It also indicates polarity and is safe to use on sensitive circuits. The product provides a firm grip to the auto-electrician to hold onto and it is easy to hook and pierce a wire. The product has a green and a red LED to indicate polarity and the LED's are visible from all angles.

Welcome to the Circuit Buddy Comments Wall 🛠️​Whether you’re a long-time owner or have only used the Circuit Buddy for a...
17/05/2026

Welcome to the Circuit Buddy Comments Wall 🛠️
​Whether you’re a long-time owner or have only used the Circuit Buddy for a few weeks, we’re glad to have you here.
​If the Circuit Buddy has changed the way you work, drop a comment below and let us know!
​Help us grow: Tag a mate or share this post to get the word out to the rest of the community. Thanks for being part of Circuit Buddy!

Speed vs. Precision: How are you tackling installs or diagnostics? ⚡​Hi everyone!​As a former Auto Sparky, I know exactl...
11/05/2026

Speed vs. Precision: How are you tackling installs or diagnostics? ⚡
​Hi everyone!
​As a former Auto Sparky, I know exactly how vital the right tool is when you're deep in a wiring loom. That’s why I created the Circuit Buddy—to bridge the gap between speed and safety.
​I’m looking to get some professional feedback from this community:
​To those already using Circuit Buddy: How is it performing for you in the field? Any specific features that have saved you time (or headaches) lately?
​To the wider group: On a technical level, do you prefer a fast LED indicator for quick "Go/No-Go" verification, or do you find yourself reaching for the specific digital readings of a multimeter?
​I’ve seen pros go both ways depending on the job, so I’m curious to see what the consensus is here.
​Cheers!
Martin

Same Innovative Design. Two Ways to Test.​At MJS Products, we understand that every job has its own preference. Whether ...
07/05/2026

Same Innovative Design. Two Ways to Test.
​At MJS Products, we understand that every job has its own preference. Whether you’re an Interlock Installer or an Auto Electrician performing a deep-dive diagnostic, your tools should work the way you do.
​That’s why the Circuit Buddy comes in two distinct versions—both featuring the same safe and easy to use piercing design.
​Choose Your Buddy
​Circuit Buddy LED Test Light
​Best for: The installer focused on efficiency.
​The Benefit: Provides instant "Go/No-Go" confirmation with a bright LED, allowing you to move through circuits in seconds.
​Circuit Buddy Safety Probe
​Best for: The technician focused on data.
​The Benefit: Connects directly to your multimeter for high-accuracy voltage readings without compromising the wire’s integrity.
​Efficiency Meets Precision
​Whether you value the standalone speed of an LED light or the precision of your multimeter, there is a Circuit Buddy designed for your toolkit.
​Upgrade your diagnostic game today.
www.circuitbuddy.net

Circuit Buddy LED Test Light 6-50 Volt. Fast wire piercing and safe to use on vehicle electronics www.circuitbuddy.net
07/05/2026

Circuit Buddy LED Test Light 6-50 Volt. Fast wire piercing and safe to use on vehicle electronics www.circuitbuddy.net

Circuit Buddy received a design excellence award. Today it have a 98% to 100% 5 Star rating that is consistent across on...
07/05/2026

Circuit Buddy received a design excellence award. Today it have a 98% to 100% 5 Star rating that is consistent across online sales. The consensus among automotive technicians is that the Circuit Buddy is a "must-have" for diagnostic specialists and installers. It is highly recommended to use in difficult to reach corrosion free areas as found for example under the dash of a vehicle.

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