2004 V-Strom 650 Loses Electric Power
So, I have an electrical issue that is proving to be a huge pain to track down.
When I was out riding today, the gauges would shut off and restart (with the full needle sweep) every time the bike hit a bump in the road (roughly every hundred yards). The engine still ran fine.
When I got home, I pulled out the battery and measured it at 12.8 volts. I don't have a method of load testing the battery, so I put it on a charger, which ran for less than 15 minutes before identifying the battery as being full.
So, I put the battery back in the bike, put the key back in the ignition (and saw the gauge startup sweep) and hit the starter, but the gauges just died (no reset sweep) without even hearing a click from the starter relay.
I pulled off the left side fairing to take a look at the wiring connector there, but it looked fine. After turning the ignition on and off a few times, I got power back to the instruments. I tried jiggling every wire I could in order to see if I could get the power to die, but nothing had any effect.
Then I flipped on the left turn signal, and the power died. After about 10 seconds, the power came back. This time, I could use both turn signals just fine with no effect on the electric power. So, I hit the starter, and the electric power died. I couldn't get the power to come back on, so I stopped testing there for the night.
The bike has previously been fine save for one minor issue. Occasionally the starter switch doesn't close the circuit when a normal amount of force is applied, so I have to really jam it down to get the bike to start.
I thought about buying a new battery, but a bad battery wouldn't explain why the gauges would die and restart every time the bike hit a bump in the road.
Any thoughts on what could be causing this?