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Small update. You were right from the beginning - I should've bought another alternator ;) I changed the bearings and then realized that the rotor is touching the stator as it rotates... I will buy an alternator from 300TDI and do a swap. I heard it's just a matter of replacing the pulley. Thank...

This is an interesting part! I noticed that the winding has been broken by the voltage regulator. You can see the wear on it: But I don't really get why it happened. All the parts at the top of the alternator seem to be in place and in quite a good shape. I mean the bearings suck and I will...

Just one question out of curiosity. How could the winding break just like that? I guess it was soldered poorly?

I did the diode test with the alternator off and they seem to be fine - above 500 in one direction (multimeter's black wire touching alternator's B+ and multimeter's red wire touching alternator's body) and no value in the other direction (wires swapped).

True, that's the plan. I will solder the wire and let you know if it's charging now :)

True, the wiring doesn't look well. Thanks a lot for your help, I'm glad I got to it finally!

I can take it to a specialist but I was really hoping to do it by myself... Just for satisfaction :) I took out the alternator and opened it. I was pretty sure I have a Lucas alternator but turned out its Magneti Marelli. But it looks exactly like Lucas A127-65. Both producers did identical...

I did the test. And yes, the light came on! So the bulb is fine. Now why doesn't it come on normally? I also did a test of the diode pack as explained in the film below (starting at around 5:30). This tests whether the current flows in just one direction. In my case I did not disconnect the...

One more thing. Yesterday I noticed that the clock is slow. It's working but it's not showing the right time. And fuse nr 14 is the one responsible for, among others, the clock. I will have to take a look at the fuse box and the wires below the steering wheel. The thing is that I have some...

So the brushes are under the silver cover with 3 bolts? I was wondering what's there. Sorry for my ignorance - I would really love to know more about car mechanics and electronics but there is still a long way ahead of me... :) I checked the wires which are outside, the voltage is there...

I checked the earths, they all are ok. I took off the heat cover and got a better look at the alternator. I noticed that the one white wire which was hanging is coming out of the D+ slot so I figured this is where the yellow-brown wire should be connected. I connected it as in the picture...

Thanks a lot. I'm leaving for a couple of days now but once I'm back I'll figure out what the problem is and let you all know here. Cheers!

Ok, thanks for all the answers! Let me summarize it to make sure that I got it. With the warning light wire (brown-yellow) connected to the alternator, the alternator would get "excited" right after starting the engine. When the wire is disconnected, however, the light never comes on and I need...

That's what I thought too BUT I have a video of a cold start of my Disco from December where the light did not come on at all but the alternator was charging (I could tell my the voltage which was over 14V). This probably means that someone changed something in the original wiring? Proof...

Thanks! I will connect the yellow-brown wire and see if the light comes on. But that won't solve my charging problem, right? Is there anything else I can check before taking the alternator out and disassembling it?

Hi guys, My alternator recently started to behave in a weird way. The voltage went from about 14V to around 12V and after some time (a few minutes) went back to below 14V. There was no pattern here, just random switching from charching to not charging. Eventually it stopped charging at all. I...

Hi everyone, I have recently sold my Toyota Land Cruiser which I've owned for 4 years and bought a car which I always wanted to have - Discovery 200TDI from 1992. It has its flaws which I'm trying to eliminate but it looks and drives great! I will post here a bit looking for some advice on...