[smonty]

The speed warning has a wiring harness that goes from the speedometer/circuit board to the buzzer. There is a cable w/knob on it to set the speed you want the warning set at, and the buzzer. You have to drill a hole in the bezel to mount the adjusting knob. That is about all that is to them. The problem is usually not the speedometer it is finding the rest of the parts. Hope this helps a little. If you have a truck later than 69 it would be a little out of place as the option was not offered on trucks after that. I just sold a nice restored speedwarning, tach, vacuum guage cluster as it would not look right on my 71. All the ones I have found were on 68 model trucks. This must be the year that most of them were installed. I am going to start giving the bigger trucks a better look from now on as I never thought they would be installed in them. It was always like Xmas when I found just a tach dash in one.

Ernie