Q:i am trying to wire my aftermarket tailight, and it did not come with the plug in adapter as the original. The three wires coming out of it are glued together in a bell type casing. Pls Help!!

The wire that is hooked to the tail light BODY is the ground wire.One wire goes to the brake light switch and the other one goes to the tail light hot wire.With a test light you can determine where each one is to be hooked to.

Q:Wire 1 and wire 2 are made from the same metal. Wire 2 has a larger diameter than wire 1. The electric field strengths E1 and E2 are equal. A) Compare the values of the two current densities. Is J1 greater than, less, or equal to J2?B) Compare the values of the currents I1 and I2. Is I1 greater then, less or equal to I2?

The current will be more dense in the smaller wire. The value of the current is inversely proportional to the resistiance of the wire. Resistance = resistivity * length / Area since the wires are of identical material and length, the only thing left to vary is the cross-sectional area. Area is proportional to the square of the radius (diameter), so the current will be proportional to the square of the diameter. I2 is proportional to I1^2 I2 is larger than I1 .

Q:How can I investigate the resistance of wire and how it changes with the length of the wireCheers

get a multimeter. get long lengths of different gauge (diameter) copper lead wire. for each diameter, measure the resistance. cut 1ft off, measure the resistance, cut 1ft off, measure the resistance, cut 1ft off, etc etc. plot the resistance vs length for each gauge separately. show that the resistance is linear in the wire length in each case. now use the different diameter data to measure the resisitivity of copper. resisitivity rho = R*A/L R = resistance L = length A = cross-sectional area cheers

Q:A vertical straight wire carrying an upward 14.2 A current exerts an attractive force per unit length of 7.80E-4 N/m on a second parallel wire 7.60 cm away. What is the magnitude of the current that flows in the second wire?

For a current I1 = 14.2 Amperes and radial separation between wires r =0.076 m, the magnetic field at wire 2 is B =0.000037368 Tesla If current I2 = 21 Amperes then the force per meter is F/ΔL =0.000784 Newtons/m hyperphysics.phy-astr.gsu.edu/hba... Goodbye

Q:How do I connect a speaker wire with four wires (white, black, red, and green) to the back of speakers with only two connections (red and white)?

Don't quite understand what you are trying to do. Speakers only require 2 wire for connection a positive and negative (usually in red and white or black). Receivers only have 2 wires per speakers a positive and a negative (usually in red and white or black). Your cable has four wires in red, white, black and green, you use only two wires per speaker in either combination of colors. This cable is designed to have 2 set of speakers, the left and right.

Q:need to know how to properly wire this amp in a truck

wow I have never heard of this amp until u mentioned it. the ratings seem good. ur best option would be to call sonic electronics have them send you a manual on how to wire this amp. they sell this amp. I mean u ask how to properly wire it. wire it to get power ? or to the woofers ? red wire + goes to your battery. black wire - goes to your ground (not your battery) to the frame of ur vehicle. then u need a blue wire, your remote this wire goes to ur stereo's remote wire it should be the same color or it will be marked. but if u do not know how to hook up an amplifier u should go to a professional shop due to the fact if u improperly hook ur amp up YOU CAN START A FIRE IN YOUR CAR.

Q:2.4) A wire has a resistance of 19.2 . It is melted down, and from the same volume of metal a new wire is made that is 5 times longer than the original wire. What is the resistance of the new wire?

the quantity of twine ought to stay the comparable that's A L, so once you double L you decrease A in 0.5. Resistance = Rho L/A, so the recent twine has 4 cases the resistance or 20 ohms.

Q:How can I repair an enamel coated headphone wire? In other words, how can an enamel coated wire be reconnected; i.e. how is the enamel coating stripped off, and what can I use to recoat it so that it won't short?

Strip off the coating to expose bare metal where you would to slice (reconnect) new wires. Twist them or soldier them together. The wires will not short unless they come in contact with electricity-conducting materials, including human flesh. Hardware stores sells paint just for wires, but you don't have to go such extremes. Just put some tape it or cover it with any other non-conductive materials.

Q:I just bought an aftermarket cd player for my Grand Cherokee and I would rather not have to cut and strip wires so I want to get an wiring harness adapter. My question is, can I just get any wiring harness adapter or do I need the direct connection adapter that is specifically made for Chrysler to Kenwood?

Doug is spot on, but missing one thing that im going to add in real quick. The wiring harness makes things simper because it is color coordinated with the aftermarket wire radios. Some chrystler/dodge/jeep come with an existing amplifier that must be bypassed in order to have sound come through the speakers. Lucky this bypass is easy as connecting a wire. (quick note, buy only metra install kits- wiring harness and dash kit) On the wiring harness there will be a blue wire (not to get confused with the blue wire from the radio) coming off of it. This needs to be hooked up with the red wires, or the blue wire from the radio's wiring harness which is the amp remote wire. This bypasses the amp.

Q:I have a water valve that I need to connect but I don't know how to read this diagram. I'm unsure how to connect the wires to the cold and hot valve. I have four wires that need to be connected. A pair of white caps with one blue wire and one orange; and a pair of black caps with one blue wire and one yellow wire. Sorry if this sounds confusing but I have no idea how to explain it well. Thanks!

Cold Valve one at the lower left of the schematic should have a yellow wire which connects directly to the controller at the P5 .1 terminal. The blue wire will connect with a wire nut to a blue wire which is a common ground for all three valves. Cold valve 2 has an orange wire which connects to the controller at the P5 .4 terminal in the blue wire should connect to the same blue wire but in a different place again with a wire nut. If that isn't clear enough post a picture of the and maybe I can explain it better.