Battery Light Issue

[daninchainz]

Ok shitty electric problem, so I turn the ignition on and the battery light does not turn on. All the other dash lights do, I have checked the bulb and continuity from the red/white wire at the alternator plug to the ecu pin and there is no break in the circuit. The alternator is not charging, I have tried 3 different alternators all having the same issue. I have checked everything at the alternator there is no voltage loss or any reason it shouldn’t charge I am stumped. Any ideas?

sorry for a sort of double post 

[GTSBoy]

The light is part of a circuit through the alternator to provide the exciter current to get the alternator going. If the globe is good and the wiring is good.....then that kinda leaves the alternator as being bad, doesn't it? Logic?

[daninchainz]

Yeah that’s what I thought but 3 seperate alternators? One of them I know is in definite working condition? 

[GTSBoy]

Ah, I didn't catch the 3 alternators bit..... Means broken wire somewhere.

[daninchainz]

Is there a way to hard wire the alternator for testing? I don’t think it’s getting the “excite” signal. Would it be safe to run 12v or 5v or whatever it is to the terminal where the white/red wire goes 

[GTSBoy]

Work with the wiring diagram. Don't fly blind or you will let the smoke out.

[daninchainz]

Do you have a link?

[dyl33]

Not sure if this helps @daninchainz only wiring diagram ive seen floating around.

[daninchainz]

Cool will let you know if I figure it out 

[GTSBoy]

Get the R32 GTR workshop/service manual from one of the million easily findable places where it can be downloaded and use the very extensive and correct wire by wire wiring diagrams. These show you what is connected to what. For the why (of things being connected) you may need to do some "how things work" research into how alternators work. Once the wiring makes sense, you can troubleshoot it.

[Semih_Ozdemir]

On 03/11/2019 at 8:41 AM, daninchainz said:

Do you have a link?

Why does a link effect this? 

[KiwiRS4T]

19 minutes ago, Semih_Ozdemir said:

Why does a link effect this? 

He's asking for a link to a wiring diagram.....

[Semih_Ozdemir]

19 minutes ago, KiwiRS4T said:

He's asking for a link to a wiring diagram.....

Hahahha omg ?‍♂️