I bought some guages off a fellow member on here and also one through Ken at PG. They are the Prosport 52mm Air/Fuel, Boost, Oil Temp. The boost is manual, and the other 2 are electric. The Oil Temp is the peak version. I took all the guages to a shop to be installed in my CP-E dash pod. They said they couldn't figure out how to install the air/fuel guage and the oil temp guage. My qusetion is : Does any body know which wire(s) do you tap into for the Air/Fuel guage to work. He hooked it up to the gray/red wire (which turned out to be 4 volts) and now my guage reads nothing but rich constantly (it never moves). Also, do I need to get an adapter plate for the sending unit on the Oil temp guage, or can I just drill and tap a hole. My mechanic guy could not figure out how to install these. He charged me $450 and they don't even ****** work!!!! Please help