Problems with the battery light of a golf MK III

Hello, I have a problem with my golf, the battery light is not turned on, or giving direct mass to the alternator cable. They have told me that it can be the contact key, in addition it does not turn off the oil pressure light.
If someone save something I appreciate their help

Czech the cables that go to the battery posts are most likely that they are too sulfated clean them and if it is necessary to replace the terminals and about the oil pressure focus because you should put a barometro to check if the engine has a pressure in case it has only the oil pressure bulb that costs you about $ 100 pesos

Hello, that was the first thing I had what to do, because they were fatal, but it is still the same, the pressure as it is cheap I will buy one of those, because I have already left him start time and nothing happens to him, he does not heat up or anything, it sounds good, so I will buy it. THANK YOU

Well, I already solve the problem, everything was the alternator, but now it is hard for him to start and I have changed all the heaters, it can be the pressure valve but the rotating pump I do not know it and I do not know where he carries the valve can someone tell me?

Did you try to change all filters ??? It may also be that the almost downloaded this battery will need load ... you can load it with a charger or take a somewhat long walk in case you do not have it so that the alternator is loaded