Wiring
This is the most common base diagram for the larger "square" Bosch relays.
"NC" means "normally closed" and that means that when the relay is NOT powered, this set of contacts is "made." You normally do not use that contact for turning things on/ off
BE CAREFUL. You will find circuits around the internet showing 86 grounded instead of 85. SOME OF THESE RELAYS have an internal diode connected across the magnet coil (between 85 and 86). THIS MEANS that it is important which of these you ground. Only way to know, other than trying it with a low amp fuse, is to learn to use a multimeter and check it
This is the most common base diagram for the larger "square" Bosch relays.
"NC" means "normally closed" and that means that when the relay is NOT powered, this set of contacts is "made." You normally do not use that contact for turning things on/ off
BE CAREFUL. You will find circuits around the internet showing 86 grounded instead of 85. SOME OF THESE RELAYS have an internal diode connected across the magnet coil (between 85 and 86). THIS MEANS that it is important which of these you ground. Only way to know, other than trying it with a low amp fuse, is to learn to use a multimeter and check it
