Very handy device for Power Pole users
For THE STOPLIGHT -- 12 Volt DC Polarity Tester/Checker
Nicely constructed, works well, and handy to have when checking Power Pole wiring. Could have made one myself, but at this price I can spend my time on bigger projects and still get the tester I want. Strongly recommended as not all Power Pole connectors are wired properly, and not all radios are adequately protected against reverse polarity voltages. Keep one of these plus one of those little AC plug testers in your tool kit, and you'll always be certain of DC polarity and correct AC wiring.
