Q:I am replacing an old outlet with a GFCI and I have encountered a red wire...what is the red wire for?

Just loose in the box or was it connected to the receptacle? If connected, it could be a switched wire to control half the receptacle. That won't work with a GFCI receptacle. Wire nut it off in the box.

Q:I have a 1988 ford econoline, and I'm upgrading my radio. I need a straight up answer, I need to know what the colors for each wire stands for, function wise.

Radio 12v lt. green/crimson + radio harness Radio floor black/orange - radio harness Radio Ignition gray/yellow + radio harness Radio Illumination N/A production facility Amp turn-on N/a skill Antenna N/A LF Speaker +/- orange/lt. grn - lt. blue/wht +,- radio harness RF Speaker +/- white/lt. grn - dk. green/org +,- radio harness LR Speaker +/- gray/lt. blue - tan/yellow +,- radio harness RR Speaker +/- orange/pink - brown/crimson

Q:2 long striaght wires (20m each) ,each having a 1.0A current going up.The distance between the two wires is 1.0m(a) what is the magnetic field (magnitude and direction) at a point o.50m left of the wire 1?(b)what is the magnetic field (magnitude and direction) at a point 0.6m right of Wire 1?

Assuming Wire 2 is to the right of Wire 1: a) Bwire1 = (u*I)/(2*pi*r) = ((4*pi*10^-7)*1A)/(2*pi*0.5) = 0.000004 Bwire2 = 0.000000424 Btotal = 0.000004424 (away from wire 1) b) Bwire1 = 0.000003333 Bwire2 = 0.000005 Btotal = -0.0000017 (toward Wire 1)

Q:I am trying to take 4 lights in the basement that currently all have to be turned on independently and wire them all in series to a single switch. I just took the wires and put them to the switch and then to the first light. it came on but when i held the silver metal shielding piece that houses the wires, I got a tingle. I think that would mean I need to connect the third wire. The grounding one. The light did come on which I think means I had the pos and neg connected right. Where do I connect the ground wire and what caused the tingle? by ground wire I mean the third wire that is nothing but copper. I think I just put it to the case or the light or whatever looks like a good spot to get grounded. any extra knowledge or advice is a big help! In the mean time I will be searching the web for how to's.

Do yourself a favor. Hire a handyman or electrician. Be smart. If you are asking these questions you shouldn't be doing the work.

Q:sence my stock head unit has no remote wire, when I hook the amp up, will it still drain the battery? I have everything connected, but the deck does not have no remote wire, and if it does I have no idea how to locate it. I am worried it will continue to run the amp when the car is off and drain the battery. Am I worried for nothing? If it will continue to drain the battery, how do I prevent this from happening?

just run a wire from you positive battery terminal to a small 5a fuse then to a 5dollar switch from your local autoparts store and hook it to you remote screw terminal on your amp. now evertime you leave your care just turn the switch off, then when your readt to hear some jams turn it on, you really dont want to splice into any existing wires because it could interfere with the computer diagnostics when you get you inspection.

Q:wires have been cut and i have 4 wires i dont know what do.what colors are for what?

What are you wiring??

Q:What good would it do to change my spark plugs and wires would it be a good idea for a 86 year of a car they've never been changed before I was wondering would it help the car out thanks for the help

yes, i would change spark plugs and wires. the spark plugs will fire better an make you get better fuel milage, and same with the wires. the wires after so much age depending on how close the wires are can have small arcs go between the wires and cause miss firing/pre ignition making it harder on the engine.

Q:Okay so I just finished replacing a stolen car radio, but I think I messed up the wiring... When I turn off the car the radio doesn't seem to save the presets I had... it resets the whole stereo... I think it has something to do with the wiring I did... When I installed the radio there were two 12+ volt wires... One said 12+ volt constant and was yellow, and the other said 12+ volt switch and was pink... Problem was when I wired only the yellow one the car stereo wouldn't work, so I tried the pink one and that didn't work.. SO thinking I was clever I wired both to the 12+ volt and VOILA the radio turned on... Problem is I don't think that's how I was supposed to wire it... I have a '97 Honda accord Ex and I don't know if that's what I was supposed to do... :#92;

A car stero needs 3 main wires Constant Power (Normally Yellow) for memory like radio presets Switched Power (Normally Red) Switched by the cars ignition so your radio turns on/off with your keys You can wire these two together as long as its a constant feed, youll just have to turn it off yourself... but then it will work when the ignition is off as well that way and Earth (Normally black) The rest of the wires if you pay attention you can pair them up to form the front speakers and rear speakers, it looks to me like... this is going to take sometime to get my head around ill edit it ounce ive worked it out... Either way youv got your red and black there thats positive and negative, it will turn on with those. How many speakers in the car, and are they orginal, I asume all wires have an open end? the four black and white ones sound like someones added them, and put non orginal speakers in.

Q:Can your use the power wire that they sell at home depo to do the big three upgrade or is it better to just get wire from a car audio store?

the wire from homedepo will work alight its just not real flexible but it will work

Q:Why is the current limiting circuit used to measure the resistance of wire by voltammetry?

Because the resistance of wire is very small, almost zero. According to the current, equal to the voltage divided by the resistor, it is known that the resistance is almost an hour and the current is close to infinity. This will burn out the power supply, so the current limiting method must be used