no signal for tacho
hey ive read all the posts about installing a tacho in a vn/vp and they all say find the brown wire with white clip behind the passenger strut tower( the easy part) i dno if the problem is just with my car or not but i have tried a bunch of different tachos using the brown wire as the signal but they just wont regester a reading at at all not even a slight spike in the needel....can anyone help???????
300rwhp supra. yay.
check that the brown wire has a current (multi meter)
Sounds like it does not so find where its broken.
yeah cheers dunno why i didnt think of that
vz ss
does anyone know where the pulse wire is on the 2005 vz ss commodores?, or where i can get a wiring diagram for the ecu???
300rwhp supra. yay.
Try getting a gregorys manual, they are good to have and it may be in there.
do the vy's have the same specs as the vz??, can only find the vy 2 manual..
this is a pain in the neck trying to find anything to do with the vz lol, would the ecu wiring be the same at the vz?
300rwhp supra. yay.
Dont know about that mate, I'll do some searching for you.
thanks a million mate, i cant find nothin but maybe i just dont know hwere to look, thanks mate
300rwhp supra. yay.
your a champion mate for helpin me out... thanks heaps, but where is this coilpack thing in the engine bay?...
300rwhp supra. yay.
Its the thing that the spark plug leads come from, but i stuffed up, i think thats for a V6...
hey, back to the vp for a min.. i traced the brown wire back as far as i can( possibly ended up with the wrong wire) back to the where the loom enters the fire wall on the drivers side. can anyone tell me where the origin is for the "brown wire" with the white clip is??
300rwhp supra. yay.
It should go through the firewall to the ecu.
like i said in the other thread you have very litte chance of getting it working without a converter and you can join me and the rest of the people who couldnt get a tacho working on that wire not to mention 3 other wires that also had a singal. just get a level 2 dash.
problem solved
Do you need a converter for just a shift light? I'm putting one in this week. Also is it possible to tap into a wire near the instrument cluster for the signal or do I just have to run a wire through the firewall to the brown wire?
Ok I just had a look and answered both of my previous questions. If anyone's interesed you can just pull the instrument cluster out and it's got it labeled which is the tacho signal wire. Much easier to connect to this than running a wire inside the engine bay IMO.
And my shift light works.
hey vn commy how much did your converter cost you??.....did you actually need it for the signal wire behind the instrument cluster??
Nah I didn't need a converter. I'm not sure if thats because it's only a shift light but it's got a digital tacho on the shift light anyway (real handy to set the shift points). I first tested it out on the wire in the engine bay (just ran speaker wires to the battery for the ground and ignition wires) and it worked fine on that. The wire behind the instrument cluster is just wire number 6, as labeled on the back of the cluster.
I read somewhere that as long as you connect to a wire that comes out of the computer it should be sweet, because the computer converts the signal into something the tacho can read. Don't hook it straight up to the coil pack.
wire6 u say. i might give it ago
- OWA650 -
"Blown Vr wagon, 275hp at the wheels.. Much more to come in the near future!"
I got my tacho working off the brown wire in engine bay and the wire behind cluster. i ended up using the wire behind cluster.
Australia. Love it or leave it
yea you dont need a converter.
like mentioned you can use one of the cluster wires, the cluster is labeled so you can trace which wire o what. the plastic slip for the cluster plug just pops out with a couple of screw drivers. or use the brown wire coming out of the ignitino module, however that could be the same wire listed above.
under the steering wheel, theres a bunch of wires that go to the dash.
its the brown wire with red stripe,
so many ppl have said this wire in the engine bay doesnt work.
my tacho works fine off the wire near the steering wheel.
Yeah same. Both wires work fine with me.
Australia. Love it or leave it
About Time
Ok everyone i had all the same problems with the tacho bullsh*t ive worked it out. for all the people with in dash tacho have no problems with it. This is the trick you have to do it in your dash if you havent got a indash tacho. This is whats got to happen behind the instruments on the dash its got numbers 4, 5, 6 you have to get the wires from the tacho into 4,5,6 this is the trick the workshop manual doesnt say.
1. hook the earth from the tacho into 4 it will be black wire behind the instrument dash.
2. for tacho ignition from the tacho go the red wire to 5, it will have a pink and black wire there.
3.The green wire goes to 6 which is the tach signal wire it will be brown and red.
many weeks it got me beat and no one new and this is how i figured out mine i tried 3 tachos to the tach terminal in the engine bay and they didnt work and i spoke to 5 professionals that didnt know and this is how i got mine to work. anyway good luck hope this solves everyones probelms
JCCCQ Member
what brands or breeds of tacho work on the so-called 5 volt square wave signal that the ecu provides...
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