I put nightbreakers in the ZS and the TF, much brighter whiter light.
The TF was almost dangerous to drive at night when I first bought it, made such a change.
The ZS is now good at night as well, just be careful you don't put the bulbs in upside down. Sounds daft but my ZS use to light up the trees, rather than the road when I changed them. In upside down!!
