Car electrical appliances are generally switches to the fuse and then to the relay and then to the electrical What about it?
It is best to have a clear line map, thanks!
General is the switch control relay, the relay to the electrical power transmission, that is, the fuse is the relay line of fire. There are individual insurance tube relay outlet. Want you to say that the switch is down insurance, it should be installed with electrical appliances should be a line or a relay. my thoughts.
Automotive relay is generally four terminals are divided into 30 # fire line, in the fuse after 15 # control power (small capacity FireWire), 85 # coil ground (access to electrical switch) 86 # coil is often FireWire (battery positive).
First to the fuse, and then to the relay and then to the electrical. The switch is the control relay.
Power supply - insurance - relays - electrical appliances