I've searched for this answer and cannot seem to find it. My 2005 SXT with the 4.2 V6 came with a speedometer and no tach in its cluster. I am a firm believer in a tachometer, and would like to go that route. Scanning the schematics, I do not see a "TACH lead" on any of the pages I have. The schematics I have scanned all show the "engine management" unit, which I'll assume has a tach lead, since the cruise control also connects to this unit. It's just not labeled as such.

My question: is the wiring harness in the dash equipped for a tach lead, so it would just be a matter of plugging in a cluster with a tach? Some manufacturers do it this way, and I thought I'd throw out this question to you folks in hopes someone has already done this. I realize the electronic odometer has to be set to match my mileage; this I can have done.