My 2001 Nissan Xterra Will not start with out jump.The lights on dash flicker, battery is fine, got it tested @ auto zone, They said it was the alternator wire? when they ran a test. Can't find the alternator wire?

When you get your Frontier started after jump starting it, does it stay running? If it does, you probably just have a bad battery. If you have a battery and brake icon come on, on your dash, you probably have a bad alternator. you could go to auto zone and they will be able to test your battery.

It sounds like the diodes in your altenator are shot. If you can get it to your local parts store, like Advanced Autoparts or Auto Zone, they will test your charging system for free. That will tell you if it's your battery, alenator or both. Hope this helps.

It sounds like a loose ground wire, which one, I can't tell you. If its in the dash, there are ground wires connected to the car frame. You probably find it by looking under the drivers dash. It will be a wire connected to the frame by a screw or nut. Just tighten it up, and should solve the problem. also check the power plug to the gauges and make sure its tight. Best I can do.

check battery terminial that go to battery are they tight how did you check battery to see if its good its your battery heres a way to tell if its your battery with out vehicle running just key on turn stuff on head lights radio wipers does radio die real fast if it does your battery is bad have battery alternator test free at advanced auto or auto zone

where you hooked the ground wire from the body to engine gorund? is not making a good connection find it on the back of the motor andf move it to a different location and re tighten

Either he's talking about the field wire plug on the alternator or the battery positive feed wire , field wire is usually a two wire plug and the battery wire is single large wire around 8 gage or so. look for loose connection at either of these wire locations...

may have a broken cam belt

well if the altenator is charging it will run after getting a jump, you replied you put a battery charger on it but that dont mean the cold cranking amps are good or it could have a dead cell. I would have the battery tested for sure. If you didnt drive far after jump the altenator may be bad but having the battery charged and still does it tells me it is least likely. If the battery tests good the cables could be corroded under the sheath where you cant see. There are other reasons but from what you have posted sounds like you need a battery most auto stores test them for free (load test also)

Check your brake fluid, have your battery tested go to AUTO ZONE they'll do it free!! Check your coolant level.

did u have the alternator tested to see output get a jump if the car starts takeit to a auto zone have him test the battery and alternator for free