1990 built year, also good for other built years.

Layout Of Front Power Distribution Box
Layout Of Rear Power Distribution Box
Auxiliary Relay Box
Fuse Assignments
Component Index>>Component Locations>>Component ID

Example:
component name: crash control unit
location: in front power distribution box
component ID: N17

http://ww2.justanswer.com/uploads/rm...841_aFinal.pdf

Print it out and keep it in your glovebox compartment, often needed.