Help with tach wire
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
Help with tach wire
Decided to install the shift light , removed the panels under the dash but I got lost !!!! a lot of wires there and I don't know where to look !!
The tach is white wire , but I saw many white wires !!
The tach is white wire , but I saw many white wires !!
Drifting
Joined: Oct 2004
Posts: 1,477
Likes: 80
From: Hawaii
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
Thanks for the link , but it's kind of confusing. I will search for the C-100 connector tomorrow morning
Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
Under-hood it looks like this:
[IMG]
[/IMG]Inside the car:
[IMG]
[/IMG]This is '96
Last edited by WVZR-1; Nov 15, 2013 at 12:17 PM.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
C100 is in your first snapshot just to the left of the clutch pedal with a cover over it. It's a (approx)115mm X 115mm box right on the firewall behind a dangling black connector and the yellow SIR harness. You can't miss it. I don't recall if the cavities are ID'd on the inside or not but G1 would be the top I believe on the left.
Under-hood it looks like this:
[IMG]
[/IMG]
Inside the car:
[IMG]
[/IMG]
This is '96
Under-hood it looks like this:
[IMG]
[/IMG]Inside the car:
[IMG]
[/IMG]This is '96
Thanks a lot that really helps. Where do you get those diagrams from ?
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
In the diagram the tach is the white wire (#E1). You see the location on the right side of the diagram, right next to the letter "E".
This view is on the motor side of the connector, so under the dash it will be on the LEFT side of C-100; the WHITE wire.
Like the man said...You really need an FSM!
I used a Raptor shift light, mounted behind the AC grill. I used a coat hanger wire to fische the Raptor wires down to the C100 connector, being sure to disconnect the battery first, and staying the hell away from that yellow wire running to the steering wheel (air bag circuit).
This is where the Raptor fits quite nicely with installation amounting to drilling a hole and taping the barrel of the light.
There is a good ground spot on the hood release bracket, if I recall, and I believe A1 (bottom right on the diagram) is a switch-on power source for your light.
P.
Last edited by Paul Workman; Nov 15, 2013 at 06:26 PM.
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Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
That is the correct connector, and your photo is of the C100.
In the diagram the tach is the white wire (#E1). You see the location on the right side of the diagram, right next to the letter "E".
This view is on the motor side of the connector, so under the dash it will be on the LEFT side of C-100; the WHITE wire.
Like the man said...You really need an FSM!
There is a good ground spot on the hood release bracket, if I recall, and I believe A1 (bottom right on the diagram) is a switch-on power source for your light.
P.
In the diagram the tach is the white wire (#E1). You see the location on the right side of the diagram, right next to the letter "E".
This view is on the motor side of the connector, so under the dash it will be on the LEFT side of C-100; the WHITE wire.
Like the man said...You really need an FSM!
There is a good ground spot on the hood release bracket, if I recall, and I believe A1 (bottom right on the diagram) is a switch-on power source for your light.
P.
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
I didn't see what year Vette the OP has. I have an FSM for the 1990 L98 and ZR-1. I double checked to see I was looking at the L98 schematic, and it clearly shows in at least two diagrams - a schematic and the connector pin-out - that the tach wire is E1. Hummmm.... What MY are we actually looking for, might be a good question, huh?
P.
Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
A DISCREPANCY!
I didn't see what year Vette the OP has. I have an FSM for the 1990 L98 and ZR-1. I double checked to see I was looking at the L98 schematic, and it clearly shows in at least two diagrams - a schematic and the connector pin-out - that the tach wire is E1. Hummmm.... What MY are we actually looking for, might be a good question, huh?
P.
I didn't see what year Vette the OP has. I have an FSM for the 1990 L98 and ZR-1. I double checked to see I was looking at the L98 schematic, and it clearly shows in at least two diagrams - a schematic and the connector pin-out - that the tach wire is E1. Hummmm.... What MY are we actually looking for, might be a good question, huh?
P.
*** I checked and it looks like he's got a '94. Here's his first request:
http://forums.corvetteforum.com/1584666510-post1.html
Last edited by WVZR-1; Nov 15, 2013 at 08:08 PM.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,624
Likes: 48
From: Saudi Arabia
That is the correct connector, and your photo is of the C100.
In the diagram the tach is the white wire (#E1). You see the location on the right side of the diagram, right next to the letter "E".
This view is on the motor side of the connector, so under the dash it will be on the LEFT side of C-100; the WHITE wire.
Like the man said...You really need an FSM!
I used a Raptor shift light, mounted behind the AC grill. I used a coat hanger wire to fische the Raptor wires down to the C100 connector, being sure to disconnect the battery first, and staying the hell away from that yellow wire running to the steering wheel (air bag circuit).
This is where the Raptor fits quite nicely with installation amounting to drilling a hole and taping the barrel of the light.
There is a good ground spot on the hood release bracket, if I recall, and I believe A1 (bottom right on the diagram) is a switch-on power source for your light.
P.
In the diagram the tach is the white wire (#E1). You see the location on the right side of the diagram, right next to the letter "E".
This view is on the motor side of the connector, so under the dash it will be on the LEFT side of C-100; the WHITE wire.
Like the man said...You really need an FSM!
I used a Raptor shift light, mounted behind the AC grill. I used a coat hanger wire to fische the Raptor wires down to the C100 connector, being sure to disconnect the battery first, and staying the hell away from that yellow wire running to the steering wheel (air bag circuit).
This is where the Raptor fits quite nicely with installation amounting to drilling a hole and taping the barrel of the light.
There is a good ground spot on the hood release bracket, if I recall, and I believe A1 (bottom right on the diagram) is a switch-on power source for your light.
P.
, thanks a lot and yes I need a FSM 
cuz I do most of the work by myself. I have the same shiftlight from raptor I believe the OP's car is a '96 but I believe that anything '92 or newer the tach signal is G1. I thought I recalled the year from his earlier posts but I didn't check. I had seen his many posts regarding the car and the "color" is his snapshots and the Avatar might have swayed by MY choice.
*** I checked and it looks like he's got a '94. Here's his first request:
http://forums.corvetteforum.com/1584666510-post1.html
*** I checked and it looks like he's got a '94. Here's his first request:
http://forums.corvetteforum.com/1584666510-post1.html
Yes , it's a '94.
It's a '94 and will be updating the thread
Team Owner
Joined: Sep 2003
Posts: 25,393
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Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
It's good that you mentioned that. I've had others tell me that it's best to go to "the source" for the connection and I would think if it were being added as a "to be used" purposeful install a person should consider that. Of course the "dip switches" allow calibration BUT still. You went the distributor side of the filter I'm guessing?
Le Mans Master
Joined: Jul 2009
Posts: 6,381
Likes: 66
From: SF bay area C.A.
C4 of the Year Finalist
It's good that you mentioned that. I've had others tell me that it's best to go to "the source" for the connection and I would think if it were being added as a "to be used" purposeful install a person should consider that. Of course the "dip switches" allow calibration BUT still. You went the distributor side of the filter I'm guessing?
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
CONGRATZ! You'll love the shift light, but I recommend you mount it in the grill cuz holding it in your left hand and shifting with your right is not going to leave you with enough hands to hold the steering wheel!
Kiddin of course
Kiddin of course