Tachometer
Senior User
Joined: Aug 2000
Posts: 305
Likes: 0
Tachometer
If you pull the engine cover, you'll see on the left side a black connector. There's a light brown wire (tach signal), a red and a black wire. I connected my tach to the brown and red wire. I connected it to ground near its installation location (left triangular window) and also hooked it up to the light switch.
Tom Ucen
1993 3.0 Ext.
Munich, Germany
Tom Ucen
1993 3.0 Ext.
Munich, Germany
Post Fiend
Joined: Jan 2000
Posts: 5,860
Likes: 4
From: Metro Detroit (Redford)
Tachometer
>If you pull the engine cover, you'll see on the left side a
>black connector. There's a light brown wire (tach signal), a
>red and a black wire. I connected my tach to the brown and
>red wire. I connected it to ground near its installation
>location (left triangular window) and also hooked it up to
>the light switch.
>
That's right. It was a light brown wire. It should be on the left when viewing the coil with the wiring clip in front of the main high voltage terminal.
>black connector. There's a light brown wire (tach signal), a
>red and a black wire. I connected my tach to the brown and
>red wire. I connected it to ground near its installation
>location (left triangular window) and also hooked it up to
>the light switch.
>
That's right. It was a light brown wire. It should be on the left when viewing the coil with the wiring clip in front of the main high voltage terminal.
Senior User
Joined: Nov 2001
Posts: 319
Likes: 0
From: Sacramento
Tachometer
Can someone tell me how to hook up a tach on a distributorless 96 4.0? The aftermarket ones I've seen say they will work on such an engine, but no particulars or diagrams are given. Thanks, all.
Post Fiend
Joined: Jan 2000
Posts: 5,860
Likes: 4
From: Metro Detroit (Redford)
Tachometer
>Can someone tell me how to hook up a tach on a
>distributorless 96 4.0? The aftermarket ones I've seen say
>they will work on such an engine, but no particulars or
>diagrams are given. Thanks, all.
Sorry. Don't know. Looked in my Chilton manual and it said on 93-95 4.0 tach line is on the ICM (ignition control module), but that 96-97 don't use a separate ICM, instead the 96-97 uses a PCM (powertrain control module) for which there appear to be dozens of wires and I could not see a tach hookup in the diagram. Some say the Haynes manual is better. You may want to look there, but I would assume it must hook somewhere to the PCM. I wonder if your Ford dealer could tell you. (Who knows, there may be a tach line in the harness connecting the instrument panel. I would think they use the same harness whether the vehicle had a factory tach or not) Also, you can call a major tach manufacturer's technical department (the one that provides help after you bought a tach and are having trouble with it). Tell them you want to buy their tach, but are reluctant to spend the money until you are sure how to hook it up. I think you will get an answer.
>distributorless 96 4.0? The aftermarket ones I've seen say
>they will work on such an engine, but no particulars or
>diagrams are given. Thanks, all.
Sorry. Don't know. Looked in my Chilton manual and it said on 93-95 4.0 tach line is on the ICM (ignition control module), but that 96-97 don't use a separate ICM, instead the 96-97 uses a PCM (powertrain control module) for which there appear to be dozens of wires and I could not see a tach hookup in the diagram. Some say the Haynes manual is better. You may want to look there, but I would assume it must hook somewhere to the PCM. I wonder if your Ford dealer could tell you. (Who knows, there may be a tach line in the harness connecting the instrument panel. I would think they use the same harness whether the vehicle had a factory tach or not) Also, you can call a major tach manufacturer's technical department (the one that provides help after you bought a tach and are having trouble with it). Tell them you want to buy their tach, but are reluctant to spend the money until you are sure how to hook it up. I think you will get an answer.
Thread
Thread Starter
Forum
Replies
Last Post
