Hi,

I have a 99 F150 and just bought a navigation system (Pioneer). It requires that I hook up to the speed sensor wire. I am having trouble finding what wire that is. I found a ECM pinout diagram for a cobra that says it's pin 68 a white/orange wire. Does anybody have any idea if if this is correct for the F150? Alternatively does anybody know where I can easily hook into the speed sensor?

Thanks
Bill

 

Should be Gy/Bk, and you can pick it up near the cluster, the PCM, the transmission, the cruise servo, or the overhead console.

 

Thanks for the reply,

Do you know if this the only Gray/BLK? I don't want to pick up the wrong one.

 

There MIGHT be another, but I doubt it. If you find one, just follow it to wherever it leads - if it goes to some component that can't possibly use the VSS, then it's the wrong one. But if it goes to something I listed, and there's only 1 going there, then you've got the right one.

 

Hi,

I have the instrument cluster out and there is no Gray/Black, but there is a Black with small gray stripe, do you think that's it?

Thanks
Again

 

After another hour or so looking, I find that at the speed sensor on the transmission, there is a brown and a dark green/ yellow stripe wire. Using a wire toner I followed it up to the ECM on the passenger firewall, but can not find it beyond that location. I do find a gray/black stripe wire on the cruse control module on the drivers side fender well. So I have a choice, the commonly reported vss wire that is gray black on the cruise control, or the wire I can follow to the vss on the transmission that is dark green/black. Any opinions?

Thanks
Bill

 

DB/Y is the OSS input to the PCM. Pk is the VSS input to the PCM. Gy/Bk is the VSS output from the PCM to the cruise & the GEM. That's definitely the one to use since it also feeds the stock radio's speed-sensitive volume. You should find the Gy/Bk wire in the radio connector.

 

Is this info also usefull for an 02 f150 HD? Im also installing a pioneer dvd/gps
and im trying to locate the speed sensor.