A500 42RH
Not sure on that plug without looking it up, but there are diagrams online for all those.
The pic of the plumbing on the passenger side is not mine.
I didn’t want anything down there to get knocked off, so I ran a section of cooler line up to the back of the intake and mounted the pressure switches under the hood.
Out of harm’s way and way easier to get to for adjustment.
Where the plumbing is connected is the governor test port.
Pressure rises at that port with increased road speed.
When pressure rises enough it triggers the switch.
The switches are actually nitrous system fuel pressure switches.
When used as designed and advertised they actually work backwards to cut off the nitrous is there isn’t sufficient fuel pressure.
In our use they are normally off until the trans pressure rises enough to close the switch.
They came from NOS Express.
They have an allen screw under the rubber cap for adjustment.
Not sure on that plug without looking it up, but there are diagrams online for all those.
The pic of the plumbing on the passenger side is not mine.
I didn’t want anything down there to get knocked off, so I ran a section of cooler line up to the back of the intake and mounted the pressure switches under the hood.
Out of harm’s way and way easier to get to for adjustment.
Where the plumbing is connected is the governor test port.
Pressure rises at that port with increased road speed.
When pressure rises enough it triggers the switch.
The switches are actually nitrous system fuel pressure switches.
When used as designed and advertised they actually work backwards to cut off the nitrous is there isn’t sufficient fuel pressure.
In our use they are normally off until the trans pressure rises enough to close the switch.
They came from NOS Express.
They have an allen screw under the rubber cap for adjustment.
