The following Relay Wiring Diagram is produced by Bosch. These wiring diagram and electrical circuit work with most American, Japanese and Korean cars. Herein you will find detail illustration and description of Bosch relay wiring diagram including Alarm Trigger Inverter, Engine Disable System, Ignition Kill Circuit (to prevent car from starting after the alarm has been triggered and until alarm is reset), parking light flasher circuit, two-way flasher, flasher circuit for European cars (this circuit using two relays, and will work with BMW, Audi, Saab, Mercedes Benz, Jaguar and Roll Royce), positive-switching door locks, car alarm, fake alarm flashing LED, Active Antenna Driver, ignition bypass to eliminate noise, AMP system remote power switch, basic fog light switch systems, horn alert with buzzer.
Find more information about Bosch Relay Wiring Diagram and Electrical Circuit in the following article. (source:fastronixsolutions.com)