Hello all,

I apologize for asking what might be a dumb noob question, but I tried searching and couldn't find any references to PCM. I'm attempting to install a Clarion Navigation system in my truck. I have to find the Speed Sense wire coming out of the PCM and tap into it with a tap splice.

I'm pretty sure the PCM is the "computer" that runs all the trucks engine/trans information. I just don't know where the sucker is!!

02 F-150 Supercrew, 5.4. I'd sure appreciate any help you all can offer.

Thanks in advance.