my speedometer doesnt have a tach, but im thinking of making a custom red shift light in the cluster
just wondering where is the signal wire?
and would that be the power wire aswell?
and then id just ground it

 

this is for autometer shift lite
black -ground
red - 12 v power
white- light illumination
green-tach signal wire

it is the blue wire on the dist i believe

 

thanks
my idea is to take one of the spaces on the cluster like the SRS light (since i dont have airbags anymore) and making the bulb, light up at redline basically w/o a tach.
would i need a relay?
for the power, signal and ground?
thanks again

 

bump

 

The blue wire is the rpm signal. You can't easily make a shift light without using some sort or relays or switches.

 

would this work? also id have a inline fuse going from the battery of course
so thats power and ground, and then one side from the blue wire of the dizzy (signal) to the bulb in the cluster

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mistermark &raquo;</TD></TR><TR><TD CLASS="quote">thanks
my idea is to take one of the spaces on the cluster like the SRS light (since i dont have airbags anymore) and making the bulb, light up at redline basically w/o a tach.
would i need a relay?
for the power, signal and ground?
thanks again</TD></TR></TABLE>

You'll need an rpm activated switch.

 

is it possible to make a rpm switch?
just wondering
and please dont say "just go out and buy one"
cuz im just asking

 

I'm sure it is possible, but I don't know how. they aren't that expensive though.

 

hmm i wonder if a variable resistor or a potentiometer would do the trick. so it would close the circuit at a certain voltage, higher voltage = higher rpm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mistermark &raquo;</TD></TR><TR><TD CLASS="quote">hmm i wonder if a variable resistor or a potentiometer would do the trick. so it would close the circuit at a certain voltage, higher voltage = higher rpm</TD></TR></TABLE>

yeah, that would work if you can figure out what the exact voltage is in the tach wire when you're at redline.