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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 12-23-2004, 01:06 AM
Nightrain Nightrain is offline
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SunPro Tachometer Installation; Tach Signal Wire and Instrument Cluster Lighting Wire

1994 Ford F-150 5.0L AODE 2WD

I'm going to order a SunPro tachometer here sometime before Christmas to install as a post-Christmas project before I go back to work.

Now, my plans are to pop off my instrument cluster bezel, or "finish panel" as my Haynes manual calls it, and screw the mount of the tach to those four or five un-used "blocks" to the right of my steering wheel. Before I order the tach, I am going to pull off the "finish panel" and make sure there is nothing behind that certain area to obstruct with a couple of screws and some wires.

I have ordered one of these tachs before to install in my 1992 Ranger, and if nothing has changed, there are four wires. They are as follows;

Red - 12V Constant Power Wire (For Shift-Lite Memory)
Black - Ground
Green - Tachometer Signal
Orange - Illumination Wire

I took the red wire and spliced it into a constant hot wire, which ran into the fuse box somewhere. Of course, the Ranger had the DIS ignition system and there was a certain color-coded wire in the truck's harness which carried the tachometer signal.

What I'm asking is two things...

1) What do I need to splice the tach signal wire into under the hood to pick up the signal for my RPM reading?

2) Which wire in the fusebox do I need splice the orange wire into for the tach's face illumination when the lights are turned on?

Thanks for any insight. I'll let you fellas know how I turn out when it's all completed!

Nightrain
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1994 Mazda B4000 4.0L 5 Speed Regular Cab SWB 4WD (Pics Coming Soon...)
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"The Good Lord Knows What All I'd Give To Stay Here In Dixie"

Last edited by Nightrain; 12-23-2004 at 01:09 AM.
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Old 12-23-2004, 10:08 AM
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GST97 GST97 is offline
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I installed a 3" Equus (same as sunpro, different face) into my F150 because the factory tach didn't work.

I cut out a round hole where that square is in the dash just right of the steering wheel.
There is absolutely nothing behind there that will interfere. Just make sure to undersize the hole and cram it in place.

As for the tach signal, you can just use a simple tap to connect it to the gray (If I remember right) wire coming off the left hand side of the coil.
As for the light source, you can tap into the brown wire coming off the back of the light switch (kind of a pain), or find any light in the dash area and tap into its positive.

-Chris
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Old 12-23-2004, 10:24 AM
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GST97 GST97 is offline
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Just for an idea on how I did it... here is a picture.



Click the image to open in full size.
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Old 12-23-2004, 11:34 AM
Nightrain Nightrain is offline
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Thanks GST97! That really helps!

Your's is mounted exactly where I want to put mine, except this SunPro tach that I'm looking at comes with a flat-surface mount and it has the ability to "turn" towards me. I don't know what I'm trying to say, but hopefully you get the picture... lol.

In other words, I can turn the tach's face toward me and position it to where I can see it without taking my eyes off of the road completely.

I really like how your installation went. Looks nice!

Nightrain
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1994 Ford F150 XLT 5.0L 4R70W Regular Cab SWB 2WD Clicky for Gallery
1994 Mazda B4000 4.0L 5 Speed Regular Cab SWB 4WD (Pics Coming Soon...)
2008 Mazda 3 iTouring 2.0L Auto 4-Door Sedan (Pics Coming Soon...)

"The Good Lord Knows What All I'd Give To Stay Here In Dixie"
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Old 12-23-2004, 09:34 PM
MemOrex MemOrex is offline
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Man, I want that. . Too bad I already have a switch in those 'blocks'.
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Old 12-23-2004, 10:29 PM
Nightrain Nightrain is offline
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Just what kinda "switch" have ya got in that area, 93GreenF150??

Nightrain
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1994 Ford F150 XLT 5.0L 4R70W Regular Cab SWB 2WD Clicky for Gallery
1994 Mazda B4000 4.0L 5 Speed Regular Cab SWB 4WD (Pics Coming Soon...)
2008 Mazda 3 iTouring 2.0L Auto 4-Door Sedan (Pics Coming Soon...)

"The Good Lord Knows What All I'd Give To Stay Here In Dixie"
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Old 12-24-2004, 09:46 AM
MemOrex MemOrex is offline
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Switch for my foglights. Oh well, guess I can always go looks for an OEM tach in a junkyard or something.
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Old 12-24-2004, 10:01 AM
Nightrain Nightrain is offline
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Ahh... Foglights. I got ya now! You could probably relocate it and put the mount for the tach on the "big block". That should be doable...

Nightrain
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1994 Ford F150 XLT 5.0L 4R70W Regular Cab SWB 2WD Clicky for Gallery
1994 Mazda B4000 4.0L 5 Speed Regular Cab SWB 4WD (Pics Coming Soon...)
2008 Mazda 3 iTouring 2.0L Auto 4-Door Sedan (Pics Coming Soon...)

"The Good Lord Knows What All I'd Give To Stay Here In Dixie"
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Old 12-24-2004, 10:01 AM
 
 
 
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1986, 2004, b400, f150, f350, ford, installation, madza, signal, source, sunpro, tach, tachometer, truck, wire, working

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