As stated, check the white wire under the tank, too. I have a 2010 Touring. After I bought it I notice that white wire (plug has about 8 wires in it) was by passed and patched. I got me that Eastern Beaver by pass right away. Mine would not start and ran intermittent when it did, but that was the second positive battery lead grounding out on the frame.
I checked the ignition switch in the process, too. On an 06, might not be a bad idea to get that by pass, anyway.
Hope you get it figured!!!