The B Series Pick-up, Navajo and MPV models use circuit breakers for components which have a high start-up amperage pull (such as power windows). All breakers will automatically reset if they have been tripped. The circuit breakers are replaceable (should one go bad or not reset) and can be found on the fuse panel.
See Figure 1
The circuit breakers are replaced in the same manner as a fuse. Simply pull the breaker from the fuse panel to remove.