1999 Heritage Softail Classic FLSTC, modified big bore kit, screaming eagle power commander Riding down the highway and the speedometer zero's out and then starts pinging up and down. At the same time the right and left turn signals stop working, the odometer flickers in and out, and the bike sputters intermittently. Checked the battery connections and ignition connections and they seem to be okay. Checked spark plug wiring, all connections from harness to the ignition switch. Removed and cleaned all connections to battery and chassis. Any ideas?