Tach Wire
10-12-2006, 06:31 PM
#1
Senior Member
SL Member
Scion Evolution
Thread Starter
Tach Wire
I have an aftermarket tach lying around, and thought of using it just for the shift light it has in it. I was wondering exactly where to tap for the tach signal. The tach has 4 wires,
Red, Black Green, and Yellow. I know where the red and black goes to, but where does the green and yellow go. and where is tha tach signal wire? Photos would help a LOT. Thanks in adavance guys, and yes I do go every week to the strip and yes I do need the Shift Light.
Red, Black Green, and Yellow. I know where the red and black goes to, but where does the green and yellow go. and where is tha tach signal wire? Photos would help a LOT. Thanks in adavance guys, and yes I do go every week to the strip and yes I do need the Shift Light.
10-13-2006, 12:07 PM
#3
Senior Member
SL Member
Team ScioNRG
Join Date: Aug 2005
Location: KAD - Tampa/Pinellas, FL
Posts: 231
10-13-2006, 12:10 PM
#4
Senior Member
SL Member
Scion Evolution
Thread Starter
Originally Posted by ProshopXB
Tach- Black wire data link conn. under dash, pin 9 or the tach wire is also found at the ECM behind the glove box, top plug, pin 5.
10-13-2006, 12:19 PM
#5
Senior Member
SL Member
Join Date: Dec 2005
Location: Lost in Tranquility
Posts: 3,270
Originally Posted by soros151
Originally Posted by ProshopXB
Tach- Black wire data link conn. under dash, pin 9 or the tach wire is also found at the ECM behind the glove box, top plug, pin 5.
or
You can pull your glovebox out and behind it will expose the factrory ECU on the right hand side. On the very top plug is the RPM wire... see the link below and where it says "I" that is the RPM wire.
http://www.zeropointindustries.net/i...em-ult-web.gif
10-15-2006, 02:38 AM
#7
Senior Member
SL Member
Scion Evolution
Thread Starter
Okay, tried looking for either the black box, or the black wire, but no luck there, so I took some pics to see if someone can pinpoint the exact location or at least a nearby place where I could find that wire. So...
Here is an upside down pic of the ECU without removing the glovebox compartment.
and can someone plase tell WTF is this?
Here is an upside down pic of the ECU without removing the glovebox compartment.
and can someone plase tell WTF is this?
10-15-2006, 02:43 AM
#8
Senior Member
SL Member
Join Date: Dec 2005
Location: Lost in Tranquility
Posts: 3,270
The white plug in the first pic, below the fuses is the OBD 2 plug... In the pic of the ECU it is the farthest plug away or all the way to the right in it.. refer to the diagram I posted above and look for pin labled as "I"..
10-15-2006, 02:49 AM
#10
Senior Member
SL Member
Join Date: Dec 2005
Location: Lost in Tranquility
Posts: 3,270
There are 2 clips on either side of the plug..that you can push in and it will slide out of the metal bracket that holds it.. then look for the black wire, tap into it by some means and you should be good to go..
12-30-2006, 08:50 PM
#15
Senior Member
SL Member
Scion Evolution
Join Date: Apr 2005
Location: Woodbridge, VA
Posts: 1,109
http://trdsparks.com/install/00602-83400-005inst.pdf
pages 20-28 for the xB. The xA and tC are also listed in there in the pages prior.
pages 20-28 for the xB. The xA and tC are also listed in there in the pages prior.
12-31-2006, 05:33 AM
#16
Senior Member
SL Member
Join Date: Sep 2006
Location: Rochester, Michigan
Posts: 150
thanks i didnt get the trd one, i got the proform one....
I finaly got it installed and it is soo nice. i just tryed all the different wires in the plug under the fues bot, and i found the one. now i can crank the music, and not have to forget to shift and over rev. But the light is sooo bright, i need to leave the cover on.
I finaly got it installed and it is soo nice. i just tryed all the different wires in the plug under the fues bot, and i found the one. now i can crank the music, and not have to forget to shift and over rev. But the light is sooo bright, i need to leave the cover on.
12-31-2006, 05:35 AM
#17
Senior Member
SL Member
Scion Evolution
Thread Starter
Originally Posted by Tboneterenzi
thanks i didnt get the trd one, i got the proform one....
I finaly got it installed and it is soo nice. i just tryed all the different wires in the plug under the fues bot, and i found the one. now i can crank the music, and not have to forget to shift and over rev. But the light is sooo bright, i need to leave the cover on.
I finaly got it installed and it is soo nice. i just tryed all the different wires in the plug under the fues bot, and i found the one. now i can crank the music, and not have to forget to shift and over rev. But the light is sooo bright, i need to leave the cover on.
12-31-2006, 05:42 AM
#18
Senior Member
SL Member
Scion Evolution
Join Date: Apr 2005
Location: Woodbridge, VA
Posts: 1,109
Originally Posted by Tboneterenzi
thanks i didnt get the trd one, i got the proform one....
I finaly got it installed and it is soo nice. i just tryed all the different wires in the plug under the fues bot, and i found the one. now i can crank the music, and not have to forget to shift and over rev. But the light is sooo bright, i need to leave the cover on.
I finaly got it installed and it is soo nice. i just tryed all the different wires in the plug under the fues bot, and i found the one. now i can crank the music, and not have to forget to shift and over rev. But the light is sooo bright, i need to leave the cover on.
