Re: Step cover slide operation valve
Reply #1 –
Your digital voltmeter will tell you in 2 seconds. Red lead of voltmeter to suspected positive, Black lead to suspected ground. Set the instrument to volts DC.
If the voltage reading is positive (+12.7 VDC for example), you have identified polarity (red lead is on the positive, black on ground).
If reading is negative (-12.7 VDC for example), the red lead is on the ground/black on positive.
Topic: Step cover slide operation valve