i would use these inserts on the front but not the back.

my rear indicators EVERY time i go out fill of water & mud....even when theres no water around they some how fill up???

i've took the lense off and refitted with a seal of Vasaline, also blocked the holes in the tail section where the leads enter the stalk.......still fills up with crap!

So i thought about changing to LED incators to save on current draw BUT also to have indicators that arent a magnet for ****e!

EDIT.....just seen this pic!! please explain.......thats amazing!!!