Left side flashers not working 72 r75/5

[kelp33]

Can anyone diagnose my problem. Left side flashers not working.
running lights work but not flashers. Right side is all good.

If it is just flasher relay any help in finding a replacment.

Thanks

[r60us]

signal light switch

[Bill Burke]

Good bad or indifferent, here's one approach the problem:

Try a different bulb in the signal. No joy?
Then clean up the wire connections at all four signals. No joy?
Then:

1. Pull the lamp off the headlamp bucket to access the fuses and flasher relay inside the headlamp bucket.
2. Check the two 8 amp fuses in the headlamp bucket to make sure neither is blown.
3. Check the yellow wire that feeds into the main headlamp socket (the socket device that the bulb is mounted to). Is the connection of the yellow wire to that socket good and solid, or weak and ready to fall out? If weak, snip some insulation off and re-insert it to make a solid connection.
4. Replace the flasher relay which is plugged into the top of the black plastic unit on the left half of the bucket. This three pronged flasher works: Napa 552.

No joy? Turn signal switch replacement, which I haven't done on that bike.