Alternator Wiring

Before I started restoration, I converted to alternator from generator. Pics in the link shows the simple wiring, the yellow wire goes to S terminal in stater solenoid. I installed everything back and the red wire is not giving me any power. At the most truck would have had 100 hr. I checked all wiring are tight. What else I can check. I am trying to avoid removing the alternator to do bench test.

Any thoughts please

Appreciated
Ganesh