iS THE TAIL LIGHT ON A 1926 ROADSTER PICKUP LOCATED ON THE LEFT RIGHT OR CENTER .i HAVE SEEN THEM IN ALL THREE LOCATIONS.
Cliff, On a TT Express bed or stake bed, it is my belief it is located on a bracket underneath the rear of the bed. On a roadster pickup, I think all were mounted on the usual stand on the left rear fender.
Clifford, Terry is correct. The tail light goes at the rear.
Hope this helps.
Allan from down under.