What are the disadvantages of the 12mm connector?
A. Nonpolarized. That means that the plug can go in backwards, which generally won’t work for electronic equipment, including Widder’s own electronic heat controller. Some electronic equipment can be DESTROYED by reversed connections, so we recommend you not standardize to this format, unless you take care to polarize your connectors. They can also vibrate, or even fall out when they get loose. You can alleviate this by using a pocketknife to spread the split pins apart a little. The screw-down wire attachments can also loosen on their own. We recommend thread-locking compound on those screws, and our units come manufactured with thread-locking compound to keep the screws in. It should be noted that Widder now manufactures their products with one-piece rubber molded connectors, removing this problem.