Load problems towards the D-Max 4x4 3.0 battery

Hello, I have a 4x4 3.0 DMAX truck, a week ago I have problems with the loading of the battery .... I bought a new and remains the same.
They checked the alternator and is running OK, they tested the entire engine crab ... now the battery loads me, but only when the lights are turned off and I do not have major accessories on ...
They recently took out the engine to change the packaging of valves and carter ..... It will be that the problem ...

help me please ... I no longer want to continue spending money in things that do not

work

Hello friend, it seems strange to me what is happening to you, it measures with a tester in the battery reveals the alternator 13.9 14 volt, and then light all the lights lights, heating and revive how much it goes down to see me if we can find the solution

I already made the measurements and are the following:
only with the engine on, Maraca 13.9 and 14 volt.
With lights, radio, air, nevliners, mark 12.7 volt if it accelerates the engine rises to 13 and then starts down the denuevo.

Thanks for helping me ...

It revizes the amperage, connects an amperimeter clamp and verifies that data with the alternator plate usually mark 10 amp This varies a bit according to the model, eye at 2500 - 3000 rpm this test is seen, ahh that km has your truck, and another question was very dirty with oil the alternator. Look to be frank more aya of the alternator is not the problem, it can be the voltage regulatory box or the alternator did not revive you very thoroughly. Do those proof and tell me luck goodbye

We already changed the regulator because I had some burned diodes ... we took out the alternator and we brought it to a test bench which came out without problems ...

what will it be ???