Trying to get VSS to work with AEM

[dslocal]

OK so I know which pin I need to plug the signal wire into on the AEM. I'm just not sure if i need to supply a sensor grnd/+5v reference to the speed sensor since the sensor has 3 wires coming out of it.(this is for a R-154)
If anyone has a pinout for the sensor that would be great. I tried searching and came up empty...
Thanks for your help.
-Doug

 

[Flateric]

You should actually be driving the VSS chanel with the pink wire from the guage cluster on the MKIII by default with the AEM, series 1 or 2. But there is much discussion going on about trying to use a abs sensor to get a less noisey signal. I'll keep you posted. I run a series 2 box myself.

 

[dslocal]

O ok thanks. I'll try hooking that up tonight. I'm also running a series 2 box.
Can you point me in the direction of this discussion? I'd love to read up on it

 

[IJ.]

Is it an ABS Trans?

 

[dslocal]

Yes, I really want to use the rear abs sensor just not sure since it is a 3 wire how to really hook it up.
I'm sure you've done it Ian. Want to lend me some of your infinite mk3 knowledge?:love::biglaugh:

 

[IJ.]

From memory it's just power/signal/ground, I "think" I wired mine to an 8v supply but will check with a bud tonight to be sure as it "may" have been 12v..... damn this old man memory....

DON'T use the VSS in the instrument cluster it's 99% useless being a bouncy reed switch.

 

[dslocal]

Thanks a lot Ian. Would you happen to know which wire is the power/signal/ground? Does it even matter?
Appreciate the help.

 

[IJ.]

Just went and checked my Trans, it's your standard Red/White/Black Power/Signal/Ground sensor and the more I think about it the more I'm sure it's a 12v sensor which is a bit freaky.

 

[dslocal]

Thanks! I'll go try wiring it in tonightand let you know how it works.
I'm not sure if the AEM has a +12v reference signal so you think it'd be ok if I just use a switched power?
And probably same ground as tps/map/other sensors?
Just don't want to give the other sensors any interference.
What do you think?

 

[IJ.]

Pretty sure I just used normal 12v and Ground lines for mine.