Hi everyone,
I recently replaced my non-working speedometer with a reproduction head unit. The truck is a '51 Chevy so after doing my reseach I purchased the 80 mph speedometer. The old one was a 90 mph speedometer so I figured that it was replaced before I owned the truck. However when I put the new unit in I noticed that the hole for the high beam indicator light is on the bottom of the 80 mph speedo whereas it was on the top of the 90 mph speedo so the indicator light doesn't line up with the hole anymore. I tried turning the head unit 180 degrees but it doesn't mount correctly.
From what I have been able to find out the truck was built in October of 51--and I know that in 1952 they went to a 90 mph speedo. So my questions is is it possible that my 51 came orginally with the 90 mph speedo?
Sorry for the long post.
Chris
