Hey Guys,
i need some help with a 1990 dodge D250 pickup with a 5.9 engine.
I have a charging issue, the battery i changed twice and swapped 2 alternators and the first 1
i took off the truck i got tested at the local advanced auto and it pass all thier tests.
but the same thing keeps happening the battery dies. Does this thing have a relay or something i can change?
I fire the truck up and remove the + batt terminal and the truck shuts off ..
Please Help thanks

Have you changed the voltage regulator?

I'm assuming it has the same charging system used from '70 & up? check for switched voltage at the blue wire field terminal on the alt and to the blue wire at the reg triangle connector. See if the green wire has continuity between the end at the alt field terminal and the other end at the reg side terminal. Check that the reg is grounded. All that is left is a bad reg as Stumpy said.

just did some searching and they have regulator built in the alternator .
and just found the problem iam having is in the computer so i need to set up a
regulator bypass .
but thanks for reply