What makes the DT connector so good?

If you know me, you probably know that I really like cars. Since I’m an EE, I end up doing wiring quite a bit, and this is the case with my Senior Design Project as well. In order to convert an engine that we have to fuel injection, it’s necessary to make our own wiring harness. I didn’t want this wiring harness to be entirely one piece, especially since our team does not have final dimensions for how long the wires will be. So, the most logical solution to make sure I can still do the more complex wiring was to add connectors!

Throttle bodies with various wires - fuel injectors, throttle body actuator, throttle position sensor

Since this area of the motor has so many things to connect, I figured it would be best to connect all of the individual components into a small wiring harness, then to take all of the wires and run them into a single connector that can easily be routed and disconnected.

So, that led me to the question: what is the best connector that is reliable, weatherproof, has lots of connections, is easy to find, and can handle a decent amount of current? The answer to that question is the DT connector!

These connectors are widely used in motorsport where vibration and moisture are real problems, and a solid connection is more important. They feature an IP68 rating, high temperature and UV resistance, and a strong mechanical connection. The DT series connectors feature a current rating of 12A continuous per contact, but if you need more power, the DTP series is rated for 25A per contact.

There are two main downsides to this connector - cost, and size. These connector housings can cost several dollars each, and require a special crimping tool for a good reliable connection. They also aren’t well suited to smaller projects, due to their size.

If you have a project where you need a reliable connection that will see harsh conditions, consider using a DT or DTP connector for it!