Of the four wires on the lead (Black, Yellow, Green, and Blue) which wire is the positive and which one is the negative?
2036383
Black is 0 V (ground or negative), the next to it, yellow, is the + 12 V (positive). Next green = sensor of rotation speed, then blue is the additional, programmable 0-12 V (PWM). 2nd and 4th are sometimes interchangable, but not always. Just sticking a second wire from the system board to the 4th fan's won't activate some of the fans. But putting a PWM into the second wire of a fan is more likely to control it. At fans it's better to look at the position in the connector, rather than colors. 0 V is always the first, edgemost, corresponding to the plastic tooth. The 3rd (sensor) is at the opposite tooth, and the 4th PWM is the pin protruding beyond the plastic tooths to the side. Looking like an additional contact "added later" to the fan standard. And in all computer wire sets, i guess, a black wire is the 0 V, and if there's no black, then a white should exist, and the white is 0 V.
2036384
The black will most always be negative. The other colors are sense, speed control & 12 vdc, but not sure witch color is representative of which. But if you use there complete plug assortment that will fit most any MB plug everything is connected properly
566773
You don't really need that information. It's common cathode (Long lead) The other leads are the anodes ... with the longest lead closer to the right the leads are: BLUE,GREEN,CATHODE,RED
2106218
There is a 4-pin connector on this item. The wire colors are: Black, Red, Yellow, and Green. Hope this helps!
1749652
Black = Negative Supply, Yellow = Load Negative, Red = Load Positive (3 wire connector) Shunt required between Yellow & Black if over 10 Amps. Black = Negative Supply, Red = Positive Supply (2 wire connector).
607678
There are two tabs on the battery, one red and one black, The red is positive, the black is negative. The wires are attached to these terminals as appropriate. As a word of warning DO NOT LET THESE BATTERIES GO DEAD. I had two and left them uncharged - both went dead with no hope of recovery
1926938
I'm not 100% positive. If I remember correctly, I googled the connector type and looked for the standard. My guess would be if you took a volt meter and put it on the resistor settings and connected one lead to the case and the other to the connector and it shows low resistance, you found the negative or ground lead. Since you really don't know where stuff is made any more or if they follow a standard, the volt meter test is probably the best way.
2104672
If the wires are brown, blue, and green with a yellow stripe then the combination is: Brown = Black Blue = White Green/Yellow = Ground Hope this helps.
2260201
There are copper dots on the back of the panel which are marked with a + for Positive and - for negative. The labels are hard to see in low light... you can solder your leads directly to the copper dots.
1671847
My light just had brown (brown/red) and blue. I used brown/red for positive (red) and blue for negative (closest to black of options provided). It works. I didn't have yellow w/green stripe. Green is usually a ground, but don't know why there would be one on a 12v DC device.
330344
No. But the leads go from the bar to a switch of 5 or 7 patterns can't remember. Then for the switch it is a lead of positive and negative.
1749651
Black = Negative Supply, Yellow = Load Negative, Red = Load Positive (3 wire connector) Shunt required between Yellow & Black if over 10 Amps.Black = Negative Supply, Red = Positive Supply (2 wire connector).
2254053
Hello. The red is always the positive so is the black. It doesn't matter which one you connect with a 12 volt adapter both are the same. You don't need the yellow wire. Cut it off. Hope this helps.
569336
The brown wire is the positive ,+, terminal which corresponds to the red wire. The blue wire is negative, -, which corresponds to the black wire. They should be labeled on the power supply. Even if you reversed them you won't harm the led's. They just won't light up.
1064911
Yes, I had the same problem. The two smaller wires are the supply voltage for the meter itself. Red is positive, black is negative. I used 5 Volts DC to power mine. The bigger wires are red, blue and black. Red is the voltage sense, blue and black are for the current sense. Black should be connected directly to ground. The blue then becomes the ground for whatever device you are sensing the current on. So, the ground side of the load goes into the blue wire (then through a shunt resistor) and then out of the black wire to ground. Hope this helps! :)
439138
Black is negative 12vRed is positive 12v (can be switched or constant power supply)Third wire (color varies) is supply voltage wanting to measure
705820
Dear Ritam Thanks for your inquiry. There are five wires on the item. The blcak one is for the negative terminal. The green one is for the brake light and the red one is for the running light. The yellow and white wires are for the turn signals. Sincerely yours, Astra Depot
569337
It's never a good idea to try to trust wire insulation color as a determination of polarity unless you have a datasheet that clearly states the color and polarity. I always test power supply outputs with a meter before connecting them.