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Locating the diagnostic port on your Harley-Davidson

The location of the diagnostic port on Harley-Davidson motorcycles varies from model to model and year to year, so be sure to double check your service manual for the correct location. In general the diagnostic port locations (as you are sitting on the bike) are as follows:

Touring Bikes:
Model years 2001 - 2007: on the RIGHT side behind the side cover in front of the saddle bags.
Model years 2008 - 2018: on the LEFT side behind the side cover in front of the saddle bags.
Softail Bikes:
All model years: under the seat.
Dyna Bikes:
All model years: on the LEFT side behind the rectangular cover below the seat.
V-Rod Bikes:
All model years: on the LEFT or RIGHT side behind the triangular cover between the frame and the forks.
XL (Sportster) Bikes:
Model years 2007 - 2018: on the LEFT side behind the side cover below the seat.
Street Bikes:
Model year 2015 - 2018: on the RIGHT side behind the side cover below the seat.