Test Products Inc.

Since 1986, Test Products Inc. (TPI), has delivered custom and cost-effective electrical test equipment for the transportation industry and suppliers. As a turnkey supplier, TPI builds every connector in-house at our Michigan facility specific to your needs. We are an ISO 9001 registered and a self-regulated company that provides full design, manufacturing, and support for our customers. To deliver results cost effectively, our ergonomic, reliable, and durable test systems are designed to the industry’s highest standards.