Look at this schematic please
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Joined: Oct 2004
Posts: 690
From: St. Charles, IL
Seems to me that your are trying to re-invent the wheel here. If you use good quality parts, I honestly don't think you need to worry about the fuel solenoid arbitrarily going bad. If this is a big concern, then you should probably just remove the fuel line that feeds the fuel jet, stick the end of the line into a bottle (safely and securely of course) and activate the fuel solenoid (after you have pressurized the vehicles fuel system - which can be done several ways) to verify that the solenoid is operating properly. The schematic that is in post #2 is the industry standard for properly wiring a nitrous system and is used by most everyone that runs a nitrous system. I would choose to use what seems to be most widely accepted AND what has proven to work the best.
Thread Starter
Registered User
Joined: Nov 2004
Posts: 1,109
From: Pittsburgh, PA
Pin 30 is constant 12v
Pin 85 is ground
Pin 86 is the coil trigger
When the coil is triggered by applying 12v, it will complete a circuit from Pin 30 to Pin 87 and send power out of Pin 87
According to your diagram...there are multiple problems
When 12v is appiled via the wire connected to pin 30...the solenoids are going to see instantaneous power but there is no ground...you have the ground wire from the nitrous solenoid attached to the FPSS. The ground for the Fuel solenoid is attached to the other side of the FPSS and the 12v trigger for the relay. In your diagram the solenoids have no ground and will not open.
The FPSS is tapped in to the nozzle side of the fuel solenoid and will see 0psi until the fuel solenoid opens. Even if you were able to supply ground from Pin 86 the FPSS will break that ground until the fuel solenoid opens.
I am assuming you have the output from the window switch attached to pin 87 on the relay. If for some reason the relay does open....the relay is going to send power out pin 87 and melt your window switch.
Pin 85 is ground
Pin 86 is the coil trigger
When the coil is triggered by applying 12v, it will complete a circuit from Pin 30 to Pin 87 and send power out of Pin 87
According to your diagram...there are multiple problems
When 12v is appiled via the wire connected to pin 30...the solenoids are going to see instantaneous power but there is no ground...you have the ground wire from the nitrous solenoid attached to the FPSS. The ground for the Fuel solenoid is attached to the other side of the FPSS and the 12v trigger for the relay. In your diagram the solenoids have no ground and will not open.
The FPSS is tapped in to the nozzle side of the fuel solenoid and will see 0psi until the fuel solenoid opens. Even if you were able to supply ground from Pin 86 the FPSS will break that ground until the fuel solenoid opens.
I am assuming you have the output from the window switch attached to pin 87 on the relay. If for some reason the relay does open....the relay is going to send power out pin 87 and melt your window switch.
lol I kinda was... I thought maybe there was a better way to do it, then started thinking about it and thought this might work better... the reason for this thread was to get a more educated person's outlook on it, other than "just do what everyone else does" answer.
Registered User
Joined: Oct 2004
Posts: 690
From: St. Charles, IL
allright thanks... that's what I was looking for
lol I kinda was... I thought maybe there was a better way to do it, then started thinking about it and thought this might work better... the reason for this thread was to get a more educated person's outlook on it, other than "just do what everyone else does" answer.
lol I kinda was... I thought maybe there was a better way to do it, then started thinking about it and thought this might work better... the reason for this thread was to get a more educated person's outlook on it, other than "just do what everyone else does" answer.
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Schantin
LT1 Based Engine Tech
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Nov 16, 2003 10:14 AM
