Boring Brick

[Ellis]

Try running the motor directly from the battery. If it runs, it could be a dead speedo. The electronize are relay based, that is the click you're hearing.

Or it may be as innocent as a loose lead somewhere.

You can also check the speedo for life by metering its outputs.

edit: then again if you got a buzz then it's more likely the motor, yes. Does it appear to try and rotate? Or no movement at all? Is it very hot/was their smoke?