Klebert L. Hall
My '69 has the HD gauge cluster; I can't find anything that looks like a transmitter box under the hood, but I don't know exactly what I'm looking for, either.
Neither my shop manual or my Motor's Truck Manual covers the tach, unfortunately.
I could drive the truck up there sometime and you could look it over, if that would help.
-Kle.
Forum:
Dodge Sweptline Truck General Discussion