This will show the magnetic speed sensor pick up and how it gets fouled from the metal shavings in the transmission which causes the speedo to stop working and the directionals to stop self canceling because of no input to the ECM from the sensor. The ECM thinks that the bike is standing still because of no input. It will also set a code which gives you a red light on the dash.
Use of a good gear oil will almost eliminate this problem completely.

Also see below *Speed sensor pick up problems* ... HERE

And this post... HERE

The 06 bikes no longer advise use of Syn 3 in the trans from HD


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