hei help
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 34
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From: shadow hills ca
hei help
i have a 1988 corvette coupe and i just put a 440hp motor in it along with a hooper rearend with 433 gears and a tci 2800 stall con. here is my problem somehow when we put the motor in we crimped of the leads for the hie i found the pink wire but cannot find the tach wire i need that for my msd does anyone know were that wire oginiates so i can run a new one or how to find the old one meter it is it indeed white im going crazy thank you and merry xmas
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
i have a 1988 corvette coupe and i just put a 440hp motor in it along with a hooper rearend with 433 gears and a tci 2800 stall con. here is my problem somehow when we put the motor in we crimped of the leads for the hie i found the pink wire but cannot find the tach wire i need that for my msd does anyone know were that wire oginiates so i can run a new one or how to find the old one meter it is it indeed white im going crazy thank you and merry xmas
Le Mans Master
Joined: Dec 2000
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From: San Diego, Ca
Runs through the Big Connector behind the Battery to Pin C5 at the Cluster. For '88 it should be in Cavity E1 at the Connector which should be the 3rd row down from the top, right side. This is the Cluster Signal only. I'd think your ignition would work without it, but then you wouldn't have a display. ECM ignition is a 4 wire harness and the EST signal is a white wire to PIN D4 at the ECM. It runs through the right side of the Firewall, behind the head.
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 34
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From: shadow hills ca
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 34
Likes: 0
From: shadow hills ca
Runs through the Big Connector behind the Battery to Pin C5 at the Cluster. For '88 it should be in Cavity E1 at the Connector which should be the 3rd row down from the top, right side. This is the Cluster Signal only. I'd think your ignition would work without it, but then you wouldn't have a display. ECM ignition is a 4 wire harness and the EST signal is a white wire to PIN D4 at the ECM. It runs through the right side of the Firewall, behind the head.
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 34
Likes: 0
From: shadow hills ca
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
That is the terminal I.D. at the ECM connection. You will need a FSM to locate it's exact location.
Yes, the tach filter should be grounded. Either on the left rear cylinder head or on the left side bell housing. Some members report that the tach filter is mounted in either location. Mine is on the head.
Yes, the tach filter should be grounded. Either on the left rear cylinder head or on the left side bell housing. Some members report that the tach filter is mounted in either location. Mine is on the head.
Last edited by RRT vette; Dec 25, 2006 at 11:21 PM.
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