Hello, im having a problem with my bike (i have bought it not full and some parts is not from this bike..) so: when i add the speed counter ( or hot this thing is called ) it have no fixing point (on the fork is a litlle pin for fixing point but on the silver part is no groove for it.. so maybe somebody can help me with fixing this? 
Thanks
![20161120_192610[1].jpg 20161120_192610[1].jpg](https://www.xs400.com/data/attachments/22/22131-7472fb9384cc853882355df7f2d9cd93.jpg)
Thanks
![20161120_192604[1].jpg 20161120_192604[1].jpg](https://www.xs400.com/data/attachments/22/22130-b75785e1e5e4d50087996fe8e2d310d8.jpg)
![20161120_192610[1].jpg 20161120_192610[1].jpg](https://www.xs400.com/data/attachments/22/22131-7472fb9384cc853882355df7f2d9cd93.jpg)