Chris, yes there is something, it's called the regulator.
Here's a link for you.
http://www.autosite.com/garage/subsys/bachargs.asp

This link shows the basics of how a charging system works and how load is applied.


1995 Trooper LS auto 3.2 DOHC /w SOHC intake
1989 Trooper 2.6 auto
1989 I-Mark RS DOHC 1.6
1991 Stylus XS DOHC 1.8