auto gauge wireing help needed

[nuggie]

hows it going all.
i got a set of auto gauges for my car the boost gauge isent a prob to wire but the air/fuel ratio gauge i dont no thare to start i have a live wire an eart and then thares a gray wire whare dose that go.
any help would be gr8 lads.

 

[Derek]

ignore that misread your post, that grey wire is for the air/fuel gauge to get its reading.

 

[Derek]

http://www.toyotagtturbo.com/forums/showthread.php?t=20491

Thats the ecu pinout there.

 

[Derek]

Im nearly sure you have to wire it to the ecu, number 6 on the 16 pin plug(lambda sensor)

 

[nuggie]

thanks for that mate.
i will have a crack at it and see what hapens.
the red wire is live.
the black is the ground.
the gray is the ecu.
so on the boost gauge thare is a red,black and orange wires.is the orange the constent live.

 

[Derek]

thanks for that mate.
i will have a crack at it and see what hapens.
the red wire is live.
the black is the ground.
the gray is the ecu.
so on the boost gauge thare is a red,black and orange wires.is the orange the constent live.

Yea im nearly 99% sure, Is there a wiring diagram with it? Id think the orange could be for the back light on the boost gauge.

 

[Sheldon]

the orange is for the light

 

[nuggie]

no diagram mate i got them second hand.
i put the red wire and the black on to a drill battery and thay lit up fine without the orange.

 

[Sheldon]

hmm.. which ones you have? the one that changes colors?

 

[Derek]

Thats the only thing id imagine its for mate, id say the orange is there for the light tbh. you leave it wired with just the black and red wires the light will be constantly on, where as if you wire the orange to a light source eg: sidelight, it will only come on when your lights are switched on.

 

[nuggie]

hmm.. which ones you have? the one that changes colors?

its the 1 whit the dark glass on the frount.
thares no buttons to change colour on it.
it has me confust.lol

 

[Derek]

Thats the only thing id imagine its for mate, id say the orange is there for the light tbh. you leave it wired with just the black and red wires the light will be constantly on, where as if you wire the orange to a light source eg: sidelight, it will only come on when your lights are switched on.

Ahem.

 

[nuggie]

Ahem.

sorry mate i mised that.
thanks for that i will try and see what happens.
i will let ye no how i get on.
many thanks.

 

[nuggie]

all sorted i got them wired.
the air/fuel gauge keeps going from lean to min.
is that normal.

 

[Mike D EP82]

theyre pretty gash tbh mate. there was one fitted to my car just before i bought it. i made him rip it out because it was so pish lol

 

[DancerEP82]

i was going to get one of these so i could get an idea on how my car is running ie rich or lean...

so are they worth it ?

 

[Sheldon]

they are only worth it so you know that the lambda is still working.. but dont bother get any readings from it!!

@ nuggie - yes they tend to go from lean to stoich from one side to an other on cruise but on boost should stay in one pace or at least move and gives you some sort of reading...