help installing 2in tach gauge. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

S14Cuhh · 07-05-2009, 06:53 PM

i got a gauge for free. some random 2 in tachometer . info on how to get a reading from the tach would be greatly appreciated. if theirs a link to anything you know please send to me

thanks

GSXRJJordan · 07-05-2009, 07:38 PM

Lol most aftermarket tachs have 4 wires, pos 12v, ground, illumination, and signal. The signal wire goes to the yellow/red wire off the ecu, others are pretty self explanatory. There should also be a 4/6/8 switch for number of cylinders.

S14Cuhh · 07-07-2009, 10:52 PM

im gonna take a pic of the wires so someone can point out which ecu wire to pick up the rpm signal

projectRDM · 07-08-2009, 07:52 AM

What's wrong with your OE tach? Or do you just like putting extra gaudy shit in your car?

GSXRJJordan · 07-08-2009, 12:06 PM

Quote:

Originally Posted by projectRDM

What's wrong with your OE tach? Or do you just like putting extra gaudy shit in your car?

I'm guessing the latter. The yellow/red wire (yellow wire, red stripe) coming off the ECU towards the dash harness is the one you want to tap for tach signal.

S14Cuhh · 07-09-2009, 09:07 AM

Quote:

Originally Posted by projectRDM

What's wrong with your OE tach? Or do you just like putting extra gaudy shit in your car?

nothing wrong with the oe tac.
1. like having the light at night
2. i was free
3.

S14Cuhh · 07-09-2009, 09:07 AM

Quote:

Originally Posted by GSXRJJordan

I'm guessing the latter. The yellow/red wire (yellow wire, red stripe) coming off the ECU towards the dash harness is the one you want to tap for tach signal.

thanks for the help. ill see you at the new lbtc meet. still need the secret location???

GSXRJJordan · 07-09-2009, 01:42 PM

Got it, thanks for the PM.

S14Cuhh · 07-16-2009, 11:21 AM

okay i tried every wire with yellow and red ...nothing gave me a signal...anyone???

projectRDM · 07-16-2009, 11:24 AM

If you were just probing every wire that's yellow/red you probably burned the tach input up.

There's a reason you connect to the correct wire and that one only.

07-05-2009, 06:53 PM	#1
S14Cuhh Zilvia FREAK! Join Date: Mar 2008 Location: 562 Posts: 1,365 Trader Rating: (23) Feedback Score: 23 reviews	help installing 2in tach gauge. i got a gauge for free. some random 2 in tachometer . info on how to get a reading from the tach would be greatly appreciated. if theirs a link to anything you know please send to me thanks

07-05-2009, 07:38 PM	#2
GSXRJJordan Post Whore! Join Date: May 2006 Location: << 626 >> Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	Lol most aftermarket tachs have 4 wires, pos 12v, ground, illumination, and signal. The signal wire goes to the yellow/red wire off the ecu, others are pretty self explanatory. There should also be a 4/6/8 switch for number of cylinders. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

07-08-2009, 07:52 AM	#4
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 47 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	What's wrong with your OE tach? Or do you just like putting extra gaudy shit in your car? __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

07-09-2009, 01:42 PM	#8
GSXRJJordan Post Whore! Join Date: May 2006 Location: << 626 >> Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	Got it, thanks for the PM. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

07-16-2009, 11:24 AM	#10
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 47 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	If you were just probing every wire that's yellow/red you probably burned the tach input up. There's a reason you connect to the correct wire and that one only. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

07-07-2009, 10:52 PM	#3
S14Cuhh Zilvia FREAK! Join Date: Mar 2008 Location: 562 Posts: 1,365 Trader Rating: (23) Feedback Score: 23 reviews	im gonna take a pic of the wires so someone can point out which ecu wire to pick up the rpm signal

07-16-2009, 11:21 AM	#9
S14Cuhh Zilvia FREAK! Join Date: Mar 2008 Location: 562 Posts: 1,365 Trader Rating: (23) Feedback Score: 23 reviews	okay i tried every wire with yellow and red ...nothing gave me a signal...anyone???

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