Now your turn signal lights actually to shine through which more visible to other drivers that may be behind you or in your blind spot area Let people know when you're wanting to make a turn or getting into the with the Light Tunnel Turn Signal Indicator. They installed a black piece of plastic where they should have installed a clear piece. This piece allows you to see if your turn signals are on and some people might be to see it from behind as . Installation: Just unscrew your turn signal housings, remove the plastic covers, break off the black plastic piece and install these. Then reinstall everything. Compatible With: Fit for Forester 2013-2018 Fit for XV 2012-2017 Material:PC colour:Transparent Package Contents: 2 x auxiliary turn signal Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.