Pacifica (& other) Wiring Diagrams
 

Handy link to obtain wiring diagram info for your Pac. They also have diagrams for other makes/models. Appear to be scanned OEM diagrams, not the whole 500 pages in detail, but a good start to help get you headed in the right direction: BBB Industries- Premium Alternators, Starters, Power Steering Products | TSB's & Wiring Diagrams - End User License Agreement