Retrogauge Mini-Tach Instructions
The RetroGauge™ Mini-Tach is designed for use with a standard ignition coil as factory fitted to 1967 and 1968 Ford Mustangs. For aftermarket ignition systems please read the important application note at the bottom of the page.
INSTALLATION
1. Disconnect the battery negative terminal from the vehicle to completely isolate the electrical system.
2. Remove the instrument cluster according the to the workshop manual (several internet resources are also available to cover this procedure)
3. Unplug the instrument wiring harness from the main wiring loom and the wiper switch wiring harness from the rear of the cluster.
4. Unscrew the speedometer cable nut and carefully withdraw the cable from the speedometer shaft.
5. Lay the cluster face down on a flat surface using a towel or similar to prevent any scratches to the instrument bezel
6. Using a Phillips (cross head) screwdriver remove the three screws retaining the plastic blanking plate or clock assembly. If the cluster is fitted with a clock the solitary wiring socket must be unplugged (blue with black stripe) and securely taped back into the harness. This should NOT be used for powering the Mini-Tach.
7. Remove the Mini-Tach from the die-cut packaging and carefully fit it into the cluster ensuring the two tabs locate in the housing flange. The Mini-Tach should now sit flush with the cluster and the three screw holes should align.
8. Re-fit the three Phillips head screws and hand tighten.
NOTE: While the cluster is out we recommend checking and replacing all dash cluster bulbs and/or blue lighting filters. Both items can be sourced from your favorite Mustang parts vendor.
Get pdf Retrogauge Mini-Tach Instructions
