cant find the right wire on the pcm and i need to finish install soon
 

Im installing a valve body assistant from ATS and the instructions that came with it say to tap into the yellow wire with a brown stripe coming out of the 18th pin of the 50 pin rear connector on the pcm....well i have searched it over and over for the past 2 hours and I cant figure out which wire it is because first of all there is no wire in pin 18 and second of all there is no yellow wire with a brown stripe..could anyone please help? I have to get this done today because I need my truck to run errands before school starts tomorrow!

PLEASE...and thanx in advance :)

p.s. both ats and the dealer that sold me the valve body are closed..i already tried calling...

I am trying to remember the installation of the mystery switch. On the trans electrical connection pin #7 I BELIEVE is a yellow wire with a brown stripe.It is the wire one grounds to lock up the TC. I am guessing that wire goes to the PCM and it is the wire you are looking for. You can find pictures on the thread DIY mystery switch.

I am just guessing.

Service manual wiring section shows pin 18 of PCM C4 connector being the one I think you're looking for. It's a 38 pin connector, right rear of engine compartment. The wire looks to be yellow with blue though. I won't swear that this is the one you're seeking. It seems right to me but I'm not positive.


Dan

thank you for the info