Once I removed the cluster, and carefully removed the mylar circuit trace, I saw the connections for the tach on the circuit trace were already there and are secured by screws holding the tach in place. What I did was remove the tach movement from the housing while preserving the front bezel. Once that was done, I had to make a couple little holes to mount everything to the space where the OEM tach went. After that, I routed the signal and illumination wires from the tach through unused holes in the circuit trace and then went about wiring up the wires. I chose to solder the connections to the trace for a more robust connection and accurate signal. For illumination, I just wedged the wire in with a gauge bulb socket. All new screws got silicone padding over them and the circuit trace got reinstalled with little disturbance from stock.Caddy Daddy said:Thank you for the help. So you just chose any old aftermarket tach that fit the space well, and as you say, all the connections are already there, just nothing connected to them?
Which tach did you choose? And did you attach it to the bottom of the gauge plastic (dark part) or did you attach it INTO the clear plastic?? That is, stuck on in a sense?? If you could provide some more info on how you attached yours that would be much obliged.
Thank you again,