David C Klasse
Thanks for your quick reply. I found a link that shows the difference. (So sorry that it's a Volvo-site but I guess God will forgive you if you
don't bookmark it)
http://www.volvospeed.com/Mods/lighting.htm
speedy300Dturbo
The reason why I want to try the higher wattage bulb is, as you guessed, to increase visibility when backing up. However - I don't want to mount a hard wired "Hella 2000 Jumbo" at the back of my SL. Thought this could be a good solution!? When increasing the wattage from 21 watts to 50 watts the current will increase from 1,75 A to 4,1 A. I don't know how exaggerated the cables are and if they put up with this current. (The reverse light isn't switched on for very long each time)