I think the U.S. Sidemarkers should be fine, the indicators should also be fine if they flash between 60 and 120 flashes per minute (flashing type). German plates should be a fail, in the past they were more likely to pass. Then there was some recent internal communication on the plates so more likely to fail. Really depends on the tester, his mood, time of day, how the plantes are aligned, etc.

Have a look at page 45 in the manual:

https://www.ncts.ie/NCT%20Manual%20Revise%20May%202012.pdf