Turn signal/Reverse light fuse keeps blowing

[longboardskier]

I have a 2007 with a manual transmission. Fuse #39 (10A turn signals/backup lamp switch) keeps blowing. I just replaced the backup lamp switch that goes into the transmission underneath hoping that was the problem, but it wasn't. Any other suggestions on what to check?

 

[KJowner]

The rear light clusters and wiring for the reversing lights.