DC power source electric wire connecting junction with anti-misconnection indication

The utility model relates to a DC power source electric wire connecting junction with anti-misconnection indication. The utility model is characterized in that a light emitting diode is forwards connected between a positive power wiring and a negative power wiring, the clamping head of a normal power source terminal is used for clamping the positive and negative electrodes of the normal power source, which causes the light emitting diode to get a forward bias to emit light, therefore, the right clamping state of the wire clamping head of the normal power source is displayed; a positive power terminal is connected in series with a test conductive sheet by a light emitting diode, the forward bias generated by using the test conductive sheet contacted with the negative electrode of the power source causes the light emitting diode to emit light, and the negative electrode of the fault power source terminal can be detected, which achieves to avoid the wiring error of the both positive and negative terminals of power source wiring.