Q:On the large harness that goes to the radio, I can't figure out what 5 of the wires are for. on the harness they are b3 (light tan/white), b4 (gray), b5 (black), a6 (pink), and a7 (blue).

To play an auxiliary source you'd need to fool the deck into thinking it's a separate factory accessory, like an XM radio tuner or CD changer. That's the purpose of the adapter. If you already have a stock XM tuner or CD changer, and you don't want to use it, you might be able to cut the audio signal wires and connect them to an audio cable running to your MP3 player. Then you can set the head unit for the XM tuner but you'll get the audio from your player. But if there's no factory external source equipped in the vehicle, then this isn't an option for you.

Q:im assuming red to red and black to black? but then what about the extra green and white wires in the iphone cable? where do they go?

Those are the USB wires. For a charger, they need connected through voltage setting resistors.

Q:Hi, I'm extending my pc 5.1 sound system stereo cables. I have a M/F extension wire which I will cut to solder a seamless wire to the system. Problem is that in the system cable I have a white, green(or red) and bare wire. and ont he extension I have a black red and white. Which wire do I connect to which?thanks

I'n not sure I understand the problem. In my view if you have 3 wires -- ending in, let's say, three plugs -- and want an extension it doesn't matter what colour the wires are as long as you end up connecting the original wires to the same plugs. So if you have white, green and bare on the original cable, when you cut the cable you have white, green and bare on both halves. Use the white, black, red extension cable to connect the two halves. I'd suggest white white, green red, and bare to black at one end and the same at the other ... but it doesn't really matter. Hope that helps.

Q:I am changing an outside light with a inside wall switch there is 2 cables going to the outside box. ( 3 wires -white w/red line wire and black wire and green ground wire ) other cable 3 wires is white wire and black wire and green ground wire.On the inside switch is 3 wires white wire a black wire a green ground wire.for some reason it is not working, can any one tell me how to wire and or test for power. thank you

IF switch and bulb are good, have you tested the light socket? Black is the HOT lead. Power (hot) goes from box, to switch, to light, to neutral (power.) THIS puts the switch in the HOT lead. Green (ground) connects to ALL points.

Q:How do I wire with reg 5 wire T-Stat Installing a 2 ton Goodman A/C cond unit to a old Carrier Heat pump AHU with emergency heat strip.

If you're wiring a thermostat to control a conventional condensing unit (non-heat pump) and a heat pump air handler, it is no different than wiring a conventional condensing unit and a standard non-heat pump air handler. Yellow (or Blue) - Y White - W Green - G Red - R The only question would be the remaining wire. Was it used to energize the reversing valve (O terminal on heat pump thermostat)? If so, you could take that wire and tie it into the C (common) wire/terminal at the air handler. That is, if your thermostat has a C terminal. If not, the wire would not be used. I'd suggest making sure those are the wire colors being used by checking them at the air handler first.

Q:I own a 1990 Toyota 4runner 6cyl, 3L. it had a few performance issues when i bought it. ( just didnt seem to have any power idling at around 200), so before spending money on expensive items, i figured spark plugs, wires, cap and rotor. So i just changed the spark plug wires today, and immediatly the truck was runnin much better idling at 800-1000 , about 5 minutes into driving, the problem started again, i parked the truck, it was idling at 200-300 again, opened the hood saw a bit of smoke coming from one of the wires, so im hoping and assuming it was just smoking because the wire was touching a hot surface, i can hear a bit of a clicking noise that i dont remember hearing before, almost like a spark. what could cause the sudden problem, is it possible the wires could be connected to the wrong spark plugs ( i replaced the old ones one by one, so i know i didnt connect it wrong) any tips would be great

The wire burned on something hot and is arcing to ground. Replace it and use a wire loom to stand it away from the problem surface. That clicking sound is the arc.

Q:How do I wire an outlet that has two black and to white wires. It this case the white being the HOT wires?? Don't know why all the white wires in my house are HOT.. And the black are nuetral???

If as you say white are (hot) .This situation it's called reverse wiring and has violation .In the main control box check the weirs if white is connect to the neutral terminal (a plate with lot of screws) and black is exit from breakers ,your wiring is correct and may one place in circuit branch by mistake neutral is connect to the hot and hot to neutral (ammature work).

Q:two straight and parallel wires are separated by 6 cm. there is a 2 A current flowing in the first wire. if the magnetic field strength is found to be zero between the two wires at a distance of 2.2 cm from the first wire, what is the magnitude and direction of the current in the second wire?

If the magnetic field at 2.2cm is zero it means that at that distance the fields produced by the two wires cancel out. At 2.2cm from the first wire the field strength is B= uI/ 2pi r ... . where u is the permitivity of free space, 4.0 x 10^-7 N/A^2 B= (4.0 x 10^-7 N/A^2)( 2 A)/ 2(3.14)(0.022m) B=( 8 x10^-7)/(0.138) B= 5.79 x 10^-6 Tesla The magnitude of the magnetic field from the other wire must be equal in magnitude at 3.8cm away (6- 2.2) and opposite in direction. Using the right hand rule (thumb points in direction of current and fingers curl around the wire to show the direction of the magnetic field) you can see that for the magnetic fields to be in opposite direction between the two wires the current must be flowing in the same direction as the first wire. Using the formula for magnetic field strength you can then determine the current needed. 5.79 x10^-6 T= (4.0 x 10^-7) I/ 2 (3.14)(0.038m) THen solve for I I= (5.79 x 10^-6 T)(2)(3.14)(0.038m)/ 4.0 x 10^-7) I= 3.45 A Therefore there is a current of 3.45A in the wire and it is flowing in the same direction as the first.

Q:i have a 92 saturn and bought the wire harness, i put all the wires together and all that turned on was the theft light that comes on when you take off the face after that i tried putting the red and yellow wires together and it worked, just without the key having to be in the ignition and i think that is why the stereo gets so hot so can youall tell me how to wire it correctly?

The red is the main power or acc power that comes on when car key is turned. The yeallow is for the memory for radio. Another word when u store a preset radio station that yellow wire supplies continues power to store mem for ever or untill u have to change batt. The reason y it worked when u hooked yellow and red to gether is they where both getting power. If one dosent get power it will no work. Check radio fuses for the yellow wire to see if it out. If u have manuel to car that would help. I had a mustang that with the yellow wire was dead i traced the wire tried to find the prob but could not. I ran a wire from batt to radio where the yellow wire hooked up. That is the same thing just try to keep the wire away from hot areas and door jams try to runn it through the firewall of the car.

Q:I recently Hooked a newer Pioneer cd player up in my 00 mustang gt!.. it will not keep memory. The only way it will come on is when the red(power) is hooked up with the Yellow wire!.. but this way it will not hold a memory.. theres a few orange wires but i have hooked them up and it still wont keep memory? any suggestions?

Chech okorder ... The red wire goes to the ignition 12 volt source, and the yellow to the battery 12 volt source. The yellow wire must remain hot with the key out to retain memory. There may be a bad fuse for the battery wire. It is usually fused through another circuit such as the cigarette lighter, clock, or horn.