Well I know some have run 80w with no problems, others have had wiring melt or the switch melt.
The relays protect it, but you have to take the bulb out of the lamp out indicator in the gauge cluster. As the lamp out indicator will light up when you do the relays. From what I have read.
We can still wire the relays for you, thats not a problem.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.