Altenator replacement - 2001 Hyundai XG300

Take a good look at the alternator plug. The tabs on the inside should all look the same. Also a lot of corrosion can cause no contact. Replace the plug if necessary.

try replacing the 2 or 4 wire plug that goes in the back of the altenator

disconnect negative battery cable. Then remove rubber boot on altenator. Remove nut and cable attached. Unplug and remove wire harness also attached to altenator.
Loosen and remove both bolts holding on altenator.
Remove altenator.
Reverse process to reinstall. Pry on belt tensioner with pry bar and socket to loosen belt and place on altenator pulley after it is installed.
Last reattach battery cable and start vehicle.

Check all connections and especially the ground connections...there should be two ground locations one at the engine block and one at the body

1. unhook battery
2. take belt off - has a tensioner pull up on to release belt
3. unhook wires from altenator-mark the wires so remember where they go
4. take out bolt's that hold altenator on
5. remove altenator -replace in reverse order

First disconnect the battery then disconnect the harness on the altenator then un bolt the altenator put the new one on then plug in the harness then reconnect the battery.

disconnect the negative battery. remove the belt by rotate the tensioner roller clockwise. from the left car side u will see three hexagon screw 13mm under the altenator. loose out the screw and remove the altenator. before that unplug the two wire behind the altenator.tq

you may need a new battery now that your altenator went, try jumping your car dose this help ?
with wireing problems like this you may need to find a trust auto shop.

lf you have replacement cable ends on your battery, check that wires are not corroded under the straps. Also check alternator ground (run a ground wire directly to the alt case) I have seen "lazy" regulators at times but this is very rare. Also make sure drivebelt is tight enough to prevent slipping. Has your battery been charged and load tested?

It's actually super easy.
All you need is your year and make alternator belt and a wrench.
Take off the existing altenator, take off the old belt.
Once the altenator is off you'll be able to look further down below where the altenator was. You'll see a metal wheel that's a little bigger than the one on the altenator. This is where the new belt needs to wrap around.
I found it alot easier to wrap the belts around the two wheels before putting the altenator back on the engine.
Make sure that all bolts and seals are sound. (that's the last thing you need falling off in the middle of nowhere!)
Hope it helped!