AfdahlBo

Any idea where these go? Found them disconnected on a 86 firebird fuel injected v6.

cmiller2014

Is your car a manual? Looks like a clutch safety switch if you're referring to the purple and yellow wires.

AfdahlBo

I am talking about the purple and yellow ones, it's an automatic

cmiller2014

I’m pretty sure it’s the neutral safety switch on an automatic

AfdahlBo

Do you know where they plug into? Here's a better picture:

Mystery wires

It's not these
There's another set of purple and yellow wires already plugged into the ecm but it's not those

afgun

This thread might be of use... https://www.thirdgen.org/forums/elec...ring-help.html

AfdahlBo

I believe his wires were on the opposite side of the car, I'm under the dash on the passenger side. Sorry for any confusion

afgun

Can you trace them to the ECM ?

AfdahlBo

I'm at the unplugged end that's by the ecm right now, I can't see where it plugs into or trace it anywhere

afgun

If you have a multi-meter, can you see if it's the same wires that are plugged into the ECM (look for same color and thickness) ?

AfdahlBo

They are the same color and thickness, the multimeter gave me the same voltage on both. The end that's in the ecm is in the yellow box

Purple wire have me 0.4 volts and yellow gave me 0.1

afgun

OK sorry. When using continuity mode, does the purple wire that connects to the yellow box (does it say buffer on it?) have continuity with the purple wire in the unknown plug? Same with the yellow?

If so, sounds like they would be connected to the VSS speed sensor on your transmission. Reference this post https://www.thirdgen.org/forums/elec...arb-350-a.html

AfdahlBo

I am getting continuity, and the yellow box does say buffer on it

AfdahlBo

So where is it supposed to be going to/coming from from the buffer box? I tried to pull the unplugged wire end out but it is attached to the rest of the wires I'm assuming from the factory

afgun

OK then the wires would go to a sensor on your transmission. A thread about its operation can be found here... https://www.thirdgen.org/forums/elec...ss-buffer.html Does your speedo work?

AfdahlBo

The speedometer works (last I knew) I don't think there's enough length on this wire to get it to the transmission. I didn't know about this wire being loose until I went to test some voltage at the ecm, so it's possible I pulled it out, but it seems hard to believe that it would have unclipped itself

afgun

If the speedometer works then I wouldn't worry about it.

AfdahlBo

Ok, thank you for your help.