Alternator wiring help, please

I have searched by haven't really found a definitive answer.
I have a 2001 5.3 in a 92 fullsize.
The alternator has two wire coming from a weather pak connector.
One is gray, one is brown, and the brown wire has 9.5volts when the key is on.
I am trying to wire in my idiot light to the dash, but am unsure where to splice in.
It appears that the brown wire goes in red 15 on the pcm and a gray wire comes out red 52.
I have read that it is important that the light be connected for its resistance.

I have the alternator wire from the original truck dash, but need to know where to hook it in the new harness.

Thanks for any help

I just plugged the old altenator wire/connector into the new altenator and everything worked fine but it's an F-body altenator but it shouldn't matter. BTW, it should be brown which triggers the light and not sure what the grey does.

Thanks

Yeah +1. The alt warning light is brown, from the alternator into the I/P cluster at pin A3, circuit 25 (BRN.) Third from one end.(in 1991)

Where is the pinout that you are referencing? Could you point me to it? I have LS1 pinouts online, which appear to be different from the truck ones..and seeing as how *I* have the exact same engine under the knife...yeah:D

what idiot light are we talking about?

Here's some 2000 truck pinouts.

Damn!! you better have some cheaters on to read these!!!!!!!!!!!!:LOL: