tacho wires in dash plugs

[bluemaumau]

hmm decided to get my standard tacho working today,

situation

4agze engine
4afe dash

=

4afe dash cannot read signal as its a coil pack engine,

fine i have a vr4 interface

i know the wire runs direct to the dash (i.e not thru the ecu)

does anyone know which pin on which plug even the exact colour trace that the wire should go to.

i think its black with two white/silver dots but would like to be sure,

is it as easy as turning the dash around and following the circuits up to the pins?

/end essay

cheers

[bluemaumau]

even if someone has the pinouts for the male / female plugs on a 4agze (by ecu) that would help

[frost]

should be the ge- on the diagnostic plug i think, if not you can make this to convert the signal this is for 4agze coils on ae86 dash
http://i12.photobucket.com/albums/a216/ ... fix5oh.gif
or this one
http://i12.photobucket.com/albums/a216/ ... tor4ly.gif

[bluemaumau]

when my dash loom was made pins that were not used were removed/cut, all i need to do is find out which pin on which plug on a ae101 4afe is the tacho rpm signal and i caan plug my wire from my tacho interface in, and should be fine.

cheers for the help frost but i know how to get the signal, i just want to know where at the other end it goes!

[thegreatestben]

u should be able to trace it on the back of the dash cluster with out too much hassle.

[bluemaumau]

yup i just found that out, problem is that the solder were the needle sits the trace splits into 3 and goes to 3 different pins, how do i know which one?

[bluemaumau]

this is only right if the solder is infact the tahco needle.

3 pins

1 goes directly to high beam light then to solder
1 goes directly to solder
1 goes directly to left indicator then to solder.

so im guessing the second one is my correct pin?

[bluemaumau]

1 goes directly to solder

this pin has a wire which is white with a black trace with a silver dot.

i had a look around the ecu area, which also has the dash male/female plugs. and found 3 wires not connected to anything but connected to the dash display.

one was black, one was yellow, and one was white with a black trace with a silver dot.

because its a conversion i know there were a few wires left over like the s/c light wire (as the 4afe doesnt have this in the dash.)

hopefully this is it then, ill hook it up and see

[bluemaumau]

if anyone has any ideas let me know, im going to go to a autosparky and see what they think, unfortunately my mates got my camera so i cant post pics

[AceSniper]

if you want to goto the hassle, the board inside the dash cluster will have "tach" and a screw runing through it... thats were it gets the input (on a ae101 anyway)

[bluemaumau]

yup i do want to, cheers ace

ive got the cluster out, do i take the actual cluster apart?

because it doesnt say tach anywhere on the back.

theres (in the vicinity of the tach needle)

1 large solder patch
3 screws with the respective letters: E, IG+, IG-

[matt dunn]

IG- is the tacho feed.

use a multi meter and see what pin it goes too.

[bluemaumau]

cheers matt

[bluemaumau]

i think its black with two white/silver dots but would like to be sure,
cheers

i think this is my wire, i found it cut at the engine end of the dash loom, and its IG- on the cluster

but when i check the resistance it gives me 2.32 or something weird.

cheers everyone