Instrument Panel Lighting Not Working 2009 Cast Wheel Bonneville Se

The Speedo and tacho come apart and there are two globe's in each ! It can be dirty contact or blown globe. I've had globe's be Too loose fitting in the globe holder/sockets and blown globe. It's usually not wiring harness at fault, unless the bike is fairly old or has considerable mileage up.

 

On my high mileage America (127,000 klms) The lower globe's in both gauges didn't fit tightly in the sockets , bit of a tweak with a fine jewellers screw driver and contact made. I now have LED globe's in them and I think they have slightly bigger bases , had no issues now for at least three months/14,000 klms, did 11,500 odd on trip to Darwin and return , six weeks.
It's more likely to be vibration and road shocks through the front end, causes loosening of sockets.

 

A poor contact in one bulb or socket will not cause the four lights to fail.
I suggest you look for a split connection. If you worked in the headlamp shell recently, you should begin to look there.

 

Hi Elgin
My english ils not that good.
I wanted to say that when working in the headlamp you could have disconnected a connector or a wire.