Pegleg Wrote:The 73 is differant to the 71 trip oddometer. Mine is does not have that big black piece
Pegleg, the same lens was used on all 71-73's that were equipped with the speedometer with the trip odometer. This particular lens has not been available from Ford for a long time, so a part of the reset knob may be missing from a previous repair attempt. Finding a used lens, even if just a broken one that could be salvaged for the reset knob, can be a difficult find.
The links provided by DonC and Rich will be a great help as you still should be able to use what you have to transfer to the new lens.
Can't provide you with a timetable or my source but I have been told there is a lens with the trip odometer reset knob in the "Works".