Review on 🚗 CURT 56130 Non-Powered 3-to-2-Wire Splice-in Trailer Tail Light Converter - 4-Pin Wiring Harness: Efficient Trailer Lighting Solution by Talapon Blackburn

unknown alarm sequence (brake, turn, drive) triggered on left side only 3 wires, one bulb, 2 trailer bulbs. unknown sequence and switching off brings the light back into the operating state. Car headlights or fuses no longer work / blow, there are no problems with ground or frayed wires behind the converter. fortunately passed the trailer test but very concerned that they will not work in the future without being able to verify whether they work or not. It's not Kurt's fault why this archaic 4 wire to 3 wire method remains the industry standard for trailer lighting?