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Technical => Electrical Tech => Topic started by: Sduneman3 on June 14, 2007, 08:33:48 PM

Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 08:33:48 PM
I'm just gettingdone doing the alalog cluster install from the base one.  I was wondering if anyone could post pics up of where they put it.

Sam
Title: Where to put the Tach Wire? (tach isn't working)
Post by: 1WLD BRD on June 14, 2007, 09:47:54 PM
run it out to your engine bay and off of the positve side of the coil.
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 09:49:10 PM
Quote from: 1WLD BRD;154316
run it out to your engine bay and off of the positve side of the coil.


Yep, ran it through the gromit for the shift linkage, but, what's the positive side?  do is go on the green or red side?
Title: Where to put the Tach Wire? (tach isn't working)
Post by: raser13 on June 14, 2007, 10:04:34 PM
here's some pics. i used the spiter clippy thingees but you can use wirenuts or sodier it.

(http://www.myrtsweb.com/upload/raser13/images/tach%20wire1.jpg)

(http://www.myrtsweb.com/upload/raser13/images/tach%20wire.jpg)
 
have fun! i hope that answers your question
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:09:13 PM
Quote from: raser13;154321
here's some pics. i used the spiter clippy thingees but you can use wirenuts or sodier it.

have fun! i hope that answers your question


Yep, thanks
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Thunder Chicken on June 14, 2007, 10:12:44 PM
Quote from: 1WLD BRD;154316
run it out to your engine bay and off of the positve side of the coil.
Positive? I've always run 'em off the negative. Positive is hot at all times when the key is on, while negative is the one that pulses...
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:12:59 PM
Quote from: Sduneman3;154324
Yep, thanks

Ok, tried it, and it still doesn't work.  I have it on #16, what Cool Cats, and Thundercat's has.  It's a 6 cyl, so I added a 50k resistor in parallel to the one one there, so it would read right.  I"ll take it apart, and take some pics of what I did.
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:13:59 PM
Quote from: Thunder Chicken;154325
Positive? I've always run 'em off the negative. Positive is hot at all times when the key is on, while negative is the one that pulses...


So your saying the red one?
Title: Where to put the Tach Wire? (tach isn't working)
Post by: softtouch on June 14, 2007, 10:17:04 PM
Green wire, negative side of the coil.
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:17:48 PM
Quote from: softtouch;154329
Green wire, negative side of the coil.


ok, that's what i did
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:31:43 PM
This is what i did. (sorry for the horrible photochop)

There's the 3.8 in there till later this summer:evilgrin: , so that's why i'm trying to get it to 75k

Is there something i'm missing?
Title: Where to put the Tach Wire? (tach isn't working)
Post by: raser13 on June 14, 2007, 10:42:30 PM
have you applied power to the red and yellow on position #1. that would stop it from working.DO NOT RUN IT TO THE POSITIVE(RED WIRE) OF THE COIL IT WILL FRY IT. i have the digital cluster with the tach on mine and it works it's on the green wire.
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:47:31 PM
Quote from: raser13;154335
have you applied power to the red and yellow on position #1. that would stop it from working.DO NOT RUN IT TO THE POSITIVE(RED WIRE) OF THE COIL IT WILL FRY IT. i have the digital cluster with the tach on mine and it works it's on the green wire.


Yep, everything works, except the oil pressure, and the tach.  The oil pressure is becasue it needs a new sending unit (it needs the TC on right?) but i think i just figured it out, I forgot to put one of the nuts that hold it to the housing back on.  I'll try that, and see if it works
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 14, 2007, 10:54:05 PM
Quote from: raser13;154335
have you applied power to the red and yellow on position #1. that would stop it from working.


What do you mean by that?
Title: Where to put the Tach Wire? (tach isn't working)
Post by: 84 Fila on June 14, 2007, 10:59:23 PM
Quote from: 1WLD BRD;154316
run it out to your engine bay and off of the positve side of the coil.


I have mine on the neg side og the coil
Title: Where to put the Tach Wire? (tach isn't working)
Post by: raser13 on June 15, 2007, 03:12:15 AM
Quote from: Sduneman3;154339
What do you mean by that?


according to coolcats on pin one ofthe clip on that cluster there should be a red andyellow wire and it should have 12v swiched to power the oil presure and tach guages if you don't have the 12v to run it the pulses from the neg. side of the coil won't count right.
Title: Where to put the Tach Wire? (tach isn't working)
Post by: Sduneman3 on June 15, 2007, 03:14:33 AM
ok,
I got it to work, I had forgotten one of the nuts that hold it on in the back, so it wasn't getting power.  It works!  Except for the lumination,  I have to look into that tomorrow, as it's 2.15 and I need to get to bed.
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