Powered by a powerful and compact 2.3L I-4 engine, the 2002 Mazda B2300 generates 135 HP of power at 5,050 rpm. It is equipped with a 5-speed manual transmission system (without overdrive), 95 ampere alternator, and stainless steel exhaust system.
The following link (source: www.marecki266.strefa.pl) will redirect you the 2002 Mazda B2300 wiring diagram and electrical system schematic. This file consists of 39 pages of PDF file type document which consists of: heater circuit, manual A/C circuit, anti-lock brake circuits, forced entry circuits, passive anti-theft, body computer, computer data lines, cooling fan, cruise control circuit, 2.3L engine performance system, back-up lamps, exterior lamps, trailer tow, ground distribution, headlight system, horn and instrument cluster, courtesy lamp, power distribution circuit, power window and power door system, radio, shift interlock, charging and starting system, wiper and washer.
Example of 2002 Mazda B2300 Wiring Diagram (Power Distribution Circuit)