What am I doing wrong? Tach install!

[V-Viper]

I don't know what I'm doing wrong wit my Autometer Tach install.

The lights are working and I can set the shift point only when I turn the key all the way around without using the clutch. The it will not read out the RPM!
So I;m geussing I'm doing it to the wrong wire? Heres the pic:

It did it to the yellowish wire, plz tell me I'm wrong and which one to use. lol

Thanks!

 

[The NJ Exile]

You hooked it up wrong....
Green Wire - to the Negtive on the coil
Black Wire - to Ground
Red Wire - 12+ Source
White Wire - To Dash board dimmer
Hope this helps.... John

 

[V-Viper]

You hooked it up wrong....
Green Wire - to the Negtive on the coil
Black Wire - to Ground
Red Wire - 12+ Source
White Wire - To Dash board dimmer
Hope this helps.... John

Thx, I geuss I juss need to ID the "Negative on the coil", I cut the green wire and put that gray wire at the end of it, shouldn't make a difference right?

The light works so I'm geussing everything ok but the wire in the pic, is that the negative on the coil?
Thx.

 

[The NJ Exile]

If the tach needle does not resond or goes the wrong way you have the worng one. when you extended the wire you have it soldered? I would suggest you do not do what you have in the PIC. Bare wires are asking for trouble. For that connection I would solder it. John

 

[V-Viper]

Yea I'm posative I got a wrong wire, anyone know which one the right one is? I got a cheap $6 soldering kit, I'll use it when I get the right wire

 

[gcomfx.com]

I hooked up everything behind the dash cluster to keep from having to run wires out under the hood....

 

[V-Viper]

I hooked up everything behind the dash cluster to keep from having to run wires out under the hood....

So you took the wire in back of the stock tach? I don't get why its not working, the Haynes book is showing that wire comes from the one I put it to from the engine (shown in pic) ..

 

[wytstang]

Acording to my MSD tfi super coil info sheet the neg(-) on the coil is the one facing the firwall.

 

[Black95GTS]

just take a multimeter and measure it out... if you get a positive voltage across both points then the black wire from the multimeter is on the negative wire. If the multimeter reads a negative voltage, then the red probe from the multimeter is on the negative terminal.