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Trailer Circuits STEM Kit
The Trailer Circuits STEM Kit is the ideal solution for educators who want to make learning electricity engaging, tangible, and safe. Teaching electricity can be challenging—its invisible nature often makes it hard for students to grasp how it powers the world around them. This pack of three Trailer Circuits Trucks transforms the mystery of electricity into a concrete set of skills through the real-world context of wiring a trailer, making the learning process both accessible and practical.
Lesson topics:
1. DC Electricity Basics​
2. Circuit Types and Wiring Skills​
3. Wires, Wiring Skills, and the 4-Way Flat Harness
4. Testing with a Multimeter and Auto Light​ Tester
5. Wiring the 7-Way Round Harness​
6. Connecting the 7-Way​ Round Harness
7. How to Troubleshoot Electrical Circuits​
8. Practice Troubleshooting with Scenarios 2-10​
Teaching hours: 6-8
Includes: Presentation slides, student activities, and pre- and post-assessments
Engineered to prioritize safety, the system does not allow dangerous short-circuits, sparks, or electrical damage to occur if a student makes a mistake
Includes all necessary components for building trailer electrical circuits, including wire stripper and crimping tools, screwdrivers, batteries, connection harnesses, wires, crimp terminals, connectors, spare bulbs, and spare terminal screws
Students wire real-world circuits used in trailer lighting systems, bringing theoretical electrical concepts to life
Trucks mimic actual rigs, with working brakes, running, reverse, and side/rear marker lights
Students wire real 4- and 7-way trailer harnesses, using crimpers, screw drivers, splice and butt connectors, crimp terminals, and color-matched spools of wire
Supports STEM learning by teaching electrical engineering concepts and problem-solving skills
Ideal for beginner to intermediate learners, offering a progressive learning experience
Includes downloadable curriculum with lessons, activities, and assessments
Develop essential troubleshooting skills by diagnosing and fixing faulty circuits, using a multimeter and auto light tester in 10 troubleshooting scenarios
Safe and effective learning without the need for a full vehicle or trailer
Allows educators to teach electrical systems in a practical, hands-on manner
Great for STEM, automotive, physics, and robotics programs integrating electrical concepts into real-world applications
Use this checklist to see how our Trailer Circuits STEM Kit meets key STEM standards, providing comprehensive support for hands-on learning in your classroom
Includes 3 sets of Trailer Circuits Trucks and accessories to keep 3 teams of 2-4 students engaged
LMS-ready student slide presentations, teacher’s guide and keys, and student workbook
What is included in the Trailer Circuits STEM Kit?
The kit includes three Trailer Circuits Trucks with wire strippers, storage boxes, crimping tools, multimeters, batteries, auto light testers, screwdrivers, and four-way and seven-way connection harnesses. It also includes wire, u-shaped crimp terminals, butt and splice connectors, spare bulbs and terminal screws, a quick start guide, and downloadable curriculum. For additional supplies view the Trailer Circuits Replacement Pack.
What skills will students learn with this kit?
Students will learn how to measure, cut, strip, and connect wires and electrical components as they practice designing, building, and testing electrical circuits, using the Auto Light Tester and Multimeter to develop their electrical troubleshooting skills.
Is the kit suitable for beginners?
Yes, the kit is designed for students with varying levels of experience, providing both beginner and more advanced circuit-building opportunities.
What can you do with the Trailer Circuits STEM Kit?
Students can wire real four- and seven-way trailer harnesses, using crimpers, screw drivers, splice and butt connectors, crimp terminals and color-matched spools of wire.
Can students test their work?
Yes! Students are guided through the troubleshooting process as they isolate the problem and identify the solution, immediately testing their complete circuits using the Left, Right, Lights, Brake and Reverse buttons. Through this process students learn to use a multimeter and auto light tester.
How does the kit align with STEM education?
The kit supports hands-on learning in electrical engineering, problem solving, and critical thinking, promoting practical application of STEM concepts.
Does the kit come with a curriculum?
Yes, the kit includes a downloadable curriculum with lessons, activities, and assessments aligned to STEM education standards.
Where could this fit in my school?
The Trailer Circuits STEM Kit is a great addition to STEM, automotive, robotics, engineering, science, physics, physical science, agri tech, automotive tech, and electricity class.
I’ve never taught electricity before. Will I still be able to use this kit?
Yes! The included curriculum and workbook provide everything you need to teach students everything from electricity basics and building circuits to wiring harnesses and troubleshooting circuits.
How many kits would you recommend for a 20-student class?
We recommend three kits for a 20-student class.
What makes this product STEM?
Students tackle real-world trailer wiring issues, simulating real-world fixes with hands-on practice.
Learners design, wire, and test circuits, applying concepts like Ohm’s Law or parallel circuit properties
The simulator bridges the gap between theory and practice, allowing students to directly apply electrical concepts and preparing them to explore robotics, automative repair and more.
Math, science, and technology concepts come together in wiring, calculations, and multimeter testing.
Guided troubleshooting builds real-world skills as students assess faults and test repairs through 10 scenarios.
Collaboration enhances learning as teams of 2–4 students work together.
Understanding electricity prepares students for future careers in automotive, manufacturing, aerospace and engineering across all disciplines.
Download our “STEM 7 Checklist” to learn how this tool aligns to key STEM standards. Get the Checklist
Do you offer product support?
Yes! Our product support team is available M-F 8am-5pm Central Time via phone, email, or chat. Contact customer support here.
This becomes one of those projects students hear about from classmates in past years. They know which teacher has the kit, and they look forward to getting to that class so they can use it themselves. That kind of anticipation from students before they even walk in your door makes teaching easier. Once they’re working with it, they’re excited to learn about electricity, attach the trailer, and do the wiring. The product helps students build a growth mindset. They understand they won’t solve problems the first time they try. If something’s not lighting up or running like it should, they learn different methods to find solutions. When they’re successful, they can be proud of themselves. Students work together figuring out solutions and learning to collaborate, which prepares them for the workforce. Tools like this are essential for STEM education because students must have hands-on access to what they’re learning about.
Rated 5 out of 5
Chris B. –
Every ag teacher in the nation is going to need at least one of these trailer circuit kits!
Erin Barr –
This becomes one of those projects students hear about from classmates in past years. They know which teacher has the kit, and they look forward to getting to that class so they can use it themselves. That kind of anticipation from students before they even walk in your door makes teaching easier. Once they’re working with it, they’re excited to learn about electricity, attach the trailer, and do the wiring. The product helps students build a growth mindset. They understand they won’t solve problems the first time they try. If something’s not lighting up or running like it should, they learn different methods to find solutions. When they’re successful, they can be proud of themselves. Students work together figuring out solutions and learning to collaborate, which prepares them for the workforce. Tools like this are essential for STEM education because students must have hands-on access to what they’re learning about.
Chris B. –
Every ag teacher in the nation is going to need at least one of these trailer circuit kits!