have a quick relay questions...
have a quick relay questions...
well I sold my nitrous kit to my buddy and I was doing the install. I had a quick question on what wire on the heater relay goes to what. Reason I ask is that the heater and the kits been out of my car so sometime and I completely forgot which wire goes to where. here is the schematic:
Correct me if I'm wrong:
30 is black
85 is red
86 is white
87 is green?
87a is blue?
This need to go to a pressure sensor and to the heater I dunno which of the two wires (green or blue) goes to either. I know that black is ground and red is power and white is signal from the switch. any help would be appreciated
Correct me if I'm wrong:
30 is black
85 is red
86 is white
87 is green?
87a is blue?
This need to go to a pressure sensor and to the heater I dunno which of the two wires (green or blue) goes to either. I know that black is ground and red is power and white is signal from the switch. any help would be appreciated
Senior Member
Joined: Dec 2005
Posts: 1,215
What heater kit did you get?
This is what my dyno-tune one says.
Pin 86 goes to the accesory prong on the toggle switch.
Pin 85 goes to the pressure switch (power)
pin 87 goes to the heater (power)
pin 30 goes to the battery through a 25a fuse.
87a means it's an 87 amp relay and that pin isn't used.
This is what my dyno-tune one says.
Pin 86 goes to the accesory prong on the toggle switch.
Pin 85 goes to the pressure switch (power)
pin 87 goes to the heater (power)
pin 30 goes to the battery through a 25a fuse.
87a means it's an 87 amp relay and that pin isn't used.
30 and 87 are the 2 pins for the heater, doesn't matter which wire you hook to which.
87a is the pin for normally closed vs 87 which is normally open not an 87 amp relay. You can see the layout by the diagram the connection for 87a is closed connecting it to pin 30 to make the circuit. When the relay is energized it flips over to the other side and touches pin 87 making that circuit and disconnecting 87a so that it becomes open.
They are made universal like that so you can use them for pretty much any application. ie the 87a would work great for the DR mod which must be connected all the time but opens when you hit WOT.
85 and 86 are to energize the relay and can also be reversed, there is no polarity. All that matters is that one receives 12v and the other goes to ground.(or a path to ground, some go through other devices first then to ground and if this path is interruped then the relay opens, like for a safety device.)
Just remember that 85 and 86 aren't in any way connected with the others, they are just to energize the relay that flops the angled switch connected to pin 30 back and forth between pin 87a and 87.
87a is the pin for normally closed vs 87 which is normally open not an 87 amp relay. You can see the layout by the diagram the connection for 87a is closed connecting it to pin 30 to make the circuit. When the relay is energized it flips over to the other side and touches pin 87 making that circuit and disconnecting 87a so that it becomes open.
They are made universal like that so you can use them for pretty much any application. ie the 87a would work great for the DR mod which must be connected all the time but opens when you hit WOT.
85 and 86 are to energize the relay and can also be reversed, there is no polarity. All that matters is that one receives 12v and the other goes to ground.(or a path to ground, some go through other devices first then to ground and if this path is interruped then the relay opens, like for a safety device.)
Just remember that 85 and 86 aren't in any way connected with the others, they are just to energize the relay that flops the angled switch connected to pin 30 back and forth between pin 87a and 87.
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AaronL
5th Generation Maxima (2000-2003)
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Nov 15, 2020 11:52 AM