Hi, I went and started my bike (CB250) and noticed that the indicators did not work. All the other lights work; headlight, side stand indactor etc, but no indicators. I took a look, and when I turned on the indicators (either left or right) a small black box under the seat the seat clicked once. I checked the fuses, none broken. I fiddled with the box and the right indicator worked for a few seconds then nothing, just the one click each time. Is this the 'flasher unit'? How much will it cost to replace? Can I do it myself? Thanks in advance for your help.