Window switch

tommyguns · 11-15-2014, 07:53 PM

Decided to go with this unit, Digital RPM Window Switch - 8969 seems to be the easiest to connect to the Zex NMU, any thought or experiences. Thanks, I know I've been hitting the forums hard with my dilemma and I really appreciate the help.

madwi · 11-15-2014, 08:47 PM

Quote:

Originally Posted by tommyguns

Decided to go with this unit, Digital RPM Window Switch - 8969 seems to be the easiest to connect to the Zex NMU, any thought or experiences. Thanks, I know I've been hitting the forums hard with my dilemma and I really appreciate the help.

There is a fuel saftey pressure switch in the diagram but should help.

*Edit* wrong wiring diagram*

tommyguns · 11-15-2014, 08:50 PM

Quote:

Originally Posted by madwi

There is a fuel saftey pressure switch in the diagram but should help.

The diagram for the 8969 shows no need for a relay, I have no clue how to screen capture

madwi · 11-15-2014, 08:56 PM

my bad, I grabbed the wrong pic...

madwi · 11-15-2014, 09:00 PM

It's been a long day, I will try to find the correct one.

tommyguns · 11-15-2014, 09:03 PM

msd install pdf page 4

madwi · 11-15-2014, 09:10 PM

Quote:

Originally Posted by tommyguns

msd install pdf page 4

even better

tommyguns · 11-15-2014, 09:13 PM

So what do you think, no relay and looks like the yellow goes to the white on the NMU?

SouthArk370Z · 11-15-2014, 09:44 PM

It looks like relay pins 85 and 86 are the coil. This would mean that the yellow wire on the window switch unit goes to ground (energizing the relay) when the WS unit is powered up via the red wire.

Appears that relay pin 30 is the switch common with pin 87 being the NO contact and 87a the NC contact. This would kill the TPS signal to the ZEX if fuel pressure is too low.

If I got all that right, the white wire on the ZEX should be connected to TPS. Doing so will do away with the low fuel pressure cut-out.

tommyguns · 11-15-2014, 09:47 PM

Quote:

Originally Posted by SouthArk370Z

It looks like relay pins 85 and 86 are the coil. This would mean that the yellow wire on the window switch unit goes to ground (energizing the relay) when the WS unit is powered up via the red wire.

Appears that relay pin 30 is the switch common with pin 87 being the NC contact and 87a the NO contact. This would kill the TPS signal to the ZEX if fuel pressure is too low.

If I got all that right, the white wire on the ZEX should be connected to TPS. Doing so will do away with the low fuel pressure cut-out.

Thanks for the reply. But the one diagram pictured is not for the unit I'm looking at. If it's not to much trouble, could you look at the pdf install for the 8969 digital unit. I could really use the help, this sh!t is driving me crazy.

tommyguns · 11-15-2014, 09:59 PM

If this would work I would even go this route Edelbrock Nitrous Systems
Digital RPM Window Switch
Catalog #71905
but in the wiring diagram it shows the white wire from the relay going to a micro switch, should I assume that in stead of going to a switch it goes to the NMU white wire?

SouthArk370Z · 11-16-2014, 07:07 AM

Post links to schematics and I'll see what I can figure out.

tommyguns · 11-16-2014, 12:22 PM

Thanks for helping, here's two I'm looking at http://www.jegs.com/InstallationInst.../350-71905.pdf
http://www.jegs.com/InstallationInst...1/121-8969.pdf

SouthArk370Z · 11-16-2014, 12:49 PM

White - Engine RPM input signal. 5-12V pulse. You can use the negative side of one of the coils or the signal from the ECM. See FSM for pinouts.
Red - RPM switch power. Get power from one of the fuse panels and use an on/off switch between the fuse block and the RPM switch. Mount the on/off switch anywhere that is convenient.
Yellow - RPM switch output (NO). Drive a relay with the output and use the relay NO contacts to switch the load (nitrous valve). Run one side of the relay contacts (NO) to the nitrous valve and the other side of the contacts (common) to a fuse and then a power source.
Gray - RPM switch output (NC). Not needed.
Black - RPM switch ground. Run to closest convenient ground.

The micro-switch (NO) is a WOT indicator to enable the relay.

tommyguns · 11-16-2014, 01:02 PM

Quote:

Originally Posted by SouthArk370Z

White - Engine RPM input signal. 5-12V pulse. You can use the negative side of one of the coils or the signal from the ECM. See FSM for pinouts.
Red - RPM switch power. Get power from one of the fuse panels and use an on/off switch between the fuse block and the RPM switch. Mount the on/off switch anywhere that is convenient.
Yellow - RPM switch output (NO). Drive a relay with the output and use the relay NO contacts to switch the load (nitrous valve). Run one side of the relay contacts (NO) to the nitrous valve and the other side of the contacts (common) to a fuse and then a power source.
Gray - RPM switch output (NC). Not needed.
Black - RPM switch ground. Run to closest convenient ground.

The micro-switch (NO) is a WOT indicator to enable the relay.

Holy cow my head is spinning lol. I'm sorry please forgive me for my ignorance when it comes to wiring. So how do I incorporate the Zex NMU? This is for the Edelbrok unit correct?

11-15-2014, 07:53 PM	#1 (permalink)
tommyguns Track Member Join Date: May 2009 Location: New York Age: 65 Posts: 914 Drives: 370Z/Sport/Black/MT Rep Power: 17	Window switch Decided to go with this unit, Digital RPM Window Switch - 8969 seems to be the easiest to connect to the Zex NMU, any thought or experiences. Thanks, I know I've been hitting the forums hard with my dilemma and I really appreciate the help. gbrettin likes this. __________________ 09 Sport / MB / 6sd / Nismo"R" Intake / Eibach Pro Kit / Z1 25 row cooler / JWT LW FW / New Short Block 3/11/11 /H&R 15fr 20rr/DBA 4000/FI CB with 12"res./Morel/JL/"Division"mod/SPC/EcuTek/M370/ZEX C SHOT/ART's/NRG

11-15-2014, 09:03 PM	#6 (permalink)
tommyguns Track Member Join Date: May 2009 Location: New York Age: 65 Posts: 914 Drives: 370Z/Sport/Black/MT Rep Power: 17	msd install pdf page 4 madwi likes this. __________________ 09 Sport / MB / 6sd / Nismo"R" Intake / Eibach Pro Kit / Z1 25 row cooler / JWT LW FW / New Short Block 3/11/11 /H&R 15fr 20rr/DBA 4000/FI CB with 12"res./Morel/JL/"Division"mod/SPC/EcuTek/M370/ZEX C SHOT/ART's/NRG

11-15-2014, 09:13 PM	#8 (permalink)
tommyguns Track Member Join Date: May 2009 Location: New York Age: 65 Posts: 914 Drives: 370Z/Sport/Black/MT Rep Power: 17	So what do you think, no relay and looks like the yellow goes to the white on the NMU? __________________ 09 Sport / MB / 6sd / Nismo"R" Intake / Eibach Pro Kit / Z1 25 row cooler / JWT LW FW / New Short Block 3/11/11 /H&R 15fr 20rr/DBA 4000/FI CB with 12"res./Morel/JL/"Division"mod/SPC/EcuTek/M370/ZEX C SHOT/ART's/NRG

11-15-2014, 09:44 PM	#9 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	It looks like relay pins 85 and 86 are the coil. This would mean that the yellow wire on the window switch unit goes to ground (energizing the relay) when the WS unit is powered up via the red wire. Appears that relay pin 30 is the switch common with pin 87 being the NO contact and 87a the NC contact. This would kill the TPS signal to the ZEX if fuel pressure is too low. If I got all that right, the white wire on the ZEX should be connected to TPS. Doing so will do away with the low fuel pressure cut-out. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

11-15-2014, 09:59 PM	#11 (permalink)
tommyguns Track Member Join Date: May 2009 Location: New York Age: 65 Posts: 914 Drives: 370Z/Sport/Black/MT Rep Power: 17	If this would work I would even go this route Edelbrock Nitrous Systems Digital RPM Window Switch Catalog #71905 but in the wiring diagram it shows the white wire from the relay going to a micro switch, should I assume that in stead of going to a switch it goes to the NMU white wire? __________________ 09 Sport / MB / 6sd / Nismo"R" Intake / Eibach Pro Kit / Z1 25 row cooler / JWT LW FW / New Short Block 3/11/11 /H&R 15fr 20rr/DBA 4000/FI CB with 12"res./Morel/JL/"Division"mod/SPC/EcuTek/M370/ZEX C SHOT/ART's/NRG

11-15-2014, 08:56 PM	#4 (permalink)
madwi A True Z Fanatic Join Date: Sep 2012 Location: West Michigan Posts: 31,410 Drives: Granma red Z Rep Power: 2684429	my bad, I grabbed the wrong pic...

11-15-2014, 09:00 PM	#5 (permalink)
madwi A True Z Fanatic Join Date: Sep 2012 Location: West Michigan Posts: 31,410 Drives: Granma red Z Rep Power: 2684429	It's been a long day, I will try to find the correct one.

11-16-2014, 07:07 AM	#12 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Post links to schematics and I'll see what I can figure out. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

11-16-2014, 12:22 PM	#13 (permalink)
tommyguns Track Member Join Date: May 2009 Location: New York Age: 65 Posts: 914 Drives: 370Z/Sport/Black/MT Rep Power: 17	Thanks for helping, here's two I'm looking at http://www.jegs.com/InstallationInst.../350-71905.pdf http://www.jegs.com/InstallationInst...1/121-8969.pdf __________________ 09 Sport / MB / 6sd / Nismo"R" Intake / Eibach Pro Kit / Z1 25 row cooler / JWT LW FW / New Short Block 3/11/11 /H&R 15fr 20rr/DBA 4000/FI CB with 12"res./Morel/JL/"Division"mod/SPC/EcuTek/M370/ZEX C SHOT/ART's/NRG

11-16-2014, 12:49 PM	#14 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	White - Engine RPM input signal. 5-12V pulse. You can use the negative side of one of the coils or the signal from the ECM. See FSM for pinouts. Red - RPM switch power. Get power from one of the fuse panels and use an on/off switch between the fuse block and the RPM switch. Mount the on/off switch anywhere that is convenient. Yellow - RPM switch output (NO). Drive a relay with the output and use the relay NO contacts to switch the load (nitrous valve). Run one side of the relay contacts (NO) to the nitrous valve and the other side of the contacts (common) to a fuse and then a power source. Gray - RPM switch output (NC). Not needed. Black - RPM switch ground. Run to closest convenient ground. The micro-switch (NO) is a WOT indicator to enable the relay. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 11-16-2014 at 12:54 PM.

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