MTFCA Forum

What is the difference between 15-16 headlight mounting posts and 17-23 posts. Iam trying to identify some I have or are they all the same and interchangeable?

Easiest visual clue is the location of the focus screw. The 1915/16 maybe part of 17(?) it was located at 12 0-clock over the bulb holder. After that it was at the 9 o-clock. 1915 up to the indroduction of the fluted lens, the rim would have the narrow tabs to hold the round glass.

Can't get the link copied. so Google Front Fender Brackets TRDxB2 MTFCA. There is addition pictures and explanation by year

'15 - '17 posts have straight, parallel sides that fit into the one sided fender iron mount, if that makes sense - later stems were "beveled" for the re- designed iron mount as Frank shows above.

Early style bucket stem on right, has straight sides to fit the early fender post mount, '15-'17.

Later on right, with wedge type stem.

Adjustment screw at 12 o'clock position on the bucket is correct through at least the 1917 model year.