Thanks for the link I'll have to check it out, and yes i have analog gauges. Let me know what you find out about the tach. btw i really appreciate you doing this for me

 

OK did a ton of googling, and 9/10 pages that i read people are saying that there IS a wire in the harness for the cluster for a tach because some blazers had tach's, and some didnt what I've read is if you get a gauge cluster with a tach it should (in theory) work. Any other opinions or any confirmations on this?