I have an extreme graphics undertray on my old TLS.......it came with LED tailights with lenses.....when i went down to the local Suzuki shop as ive always done for a wof they told me that they couldnt pass it with the aftermarket lenses......a bit like braided lines and needed certain numbers on them......no worrys and just went elsewhere for my warrants......turns out they have found out they were wrong and told me they would be quite happy to do my WOFs........so for anyone else with modded lights that gets refused tell em to check there facts..............