Everything in every car (some are the exception such as honda vtech solenoids or gm fuel pump relays) is taken to ground. All the switching from the ECU is done to ground, this is safer for the ECU in the event of a short circuit and prevents voltage abnormalities as the ECU is not providing power (12v +)to a load.ok so just a ground activated relay off the MS wire labeled FAN.
sorry it just seems backwards as to what im used too