Wiring Diagram
That would be chapter 8W of the factory service manual, about 100+ pages worth.
The FSM can be had off eBay usually; it can be ordered new from the reproducer for Mother Mopar, Bishko Books ( Bishko Automobile Liturature available for 1991, Dodgetruck, Shop Manual (autobooksbishko.com) ), and the discs from Bishko can actually be purchased at places like Summit Racing and should be available via the dealership.
RwP
The FSM can be had off eBay usually; it can be ordered new from the reproducer for Mother Mopar, Bishko Books ( Bishko Automobile Liturature available for 1991, Dodgetruck, Shop Manual (autobooksbishko.com) ), and the discs from Bishko can actually be purchased at places like Summit Racing and should be available via the dealership.
RwP


