I have a 2006 chevy 5.3L I am putting in a 81 chevy c10. I just purchased the F.A.S.T. xfi system to run it. I am wondering how the charging system should be wired up. I looked into how the oe was doing it with sending a 9 VOLT pulse width modulated signal to the alt to tell it how high to regulate the voltage & amp output. what do I do?

 

check out the swaps & electronics section.

 

Agreed.