does anybody have a copy of the schematics/instructions for the install of this thing?

i also have a large solenoid looking thing (bought the kit used) that is in line just before the fuel solenoid. it has 2 posts on it. does anybody know what this is? one of the posts has a a wire going in and another going to the fuel solenoid. there are no wires attatched to the other post (ground?). what is this solenoid thing and should it have another wire on it? the relay for the WOT switch, what color wire should be what? is there a ground on the relay that needs to be grounded? does this relay come between the WOT switch and the solenoids?

thanks to anybody that can help me out.

 

I will see if I can still find mine. I have a wet kit.
Could that solenoid thing be the purge solenoid? Or is it a fuel pressure safety switch? It would be better if you had pics of this stuff. I will see if I can fine my schematics. I might have a copy here at work.

 

Here is a basic schematic of how my system is installed.

Click Here

One thing missing in this diagram is the fuel pressure safety switch. It is located inline in the ground wire for the Solenoids relay. When fuel pressure drops, the relay closes both solenoids.

From the sounds of it, it seems that your system's fuel pressure safety switch is wired to the fuel solenoid only which is not correct.

 

i thought it could have been a FPSS, but it did not look the same as the ones on NX's webpage. how should my wires run to the 2 posts on it? thanks for the schemnatic also, it should help me considerably.

 

If it is a FPSS, then it will have a fuel in, fuel out, two terminals, and an adjusting screw on top. It is just a basic switch using the two terminals. It is suggested you put the ground wire from the solenoid relay on one of the terminals and the other terminal straight to a ground. Then, with the fuel lines connected, use a test light to set the pressure setting for the switch bu turning the adjustment screw (usually on top). Clockwise will set the safety switch at a higher pressure. It is easiest if you have an adjustable fuel pressure regulator and a fuel pressure gauge as you can set your fuel pressure to the psi that you want to set the switch to, and adjust the switch perfectly. Without these, you pretty much have to guess how much farther to adjust the switch.

For a system that usually runs 39-43 psi of fuel pressure, you will probably have to set the switch to close to 5-10 psi lower than your standard fuel pressure in order for it not to cycle on and off when the fuel solenoid opens. It is also good practice to install the safety switch as far away from the solenoid as possible in order to minimize the switch seeing the pressure drop from the opening of the solenoid. So, from the schraeder valve on the fuel rail, install the FPSS, then the feed line, then the solenoid. That should give 18" between the two but still allow the switch to do it's job.

Chris

 

thanks. i will look at it tomorrow and se if this helps.

 

check your mail, i just sent ya a pretty helpful diagram.

 

thanks man, this will help a lot. you have 2 N2O solenoids on here and no fuel solenoid. i could just change one to a fuel solenoid for my pruposes, right? also, your window switch has 3 wires coming from it, mine is built into my ignition and only has one. i don't exactly know how it works. the instructions say "the output wire for the RPM switch is the VIOLET wire...it is connected to ground when the switch is active, and has a maximum current rating of 10 amps." does this mean that it would go to the WOT switch then to the 86 point of the relay as your yellow wire does? i took a voltmeter the other day and tried to measure the amount of voltage that came through when the switch turns on and it seemed to be less than 12v, will this be a problem?

picture this:
i am going to attatch my window switch output wire to a toggle switch, then to my high speed retard so that when the window switch makes power it will trigger the retard, then run from there to the WOT switch, back to the relay (#86?), then from the relay (#87) to power at both solenoids. good so far?

the solenoids will then both ground into the FPSS on the same post, and the other post goes to ground.

does that sound about right?

 

okay, i think i hooked everything up correctly. i ran the white wire from the relay to the neg on the battery (agtually, it goes to the little post on the inner fender with all the grounds). my friend looked at his and it was run to there, so i figure it is right. i am also not quite sure if i have this window switch figured out. i ran the output wire of the switch to an illuminated rocker, then out to the WOT switch. i would thin that when the window switch turned on at the set RPM, it would light the rocker right (yes, it is switched to on when i checked this). it is not lighting. i might end up bypassing the Window switch for now and just running the WOT switch if i cannot figure this out.

 

Did you properly ground the light? If not due so

Everything sounds like you have it hooked up correctly..

Cody

 

i grounded it to a screw under the dash. i will relocate it with a selftapping screw and see if it makes a difference.