The Hella 500's (not ff's) come stock with 55 watt bulbs correct? Can you put 100 watt bulbs in them? If so do you have a brand and part number? Thanks in advance, much help.
All those lights (Hella 500, 500ff, 700ff) use H3 bulbs, which can be bought in 55w, 100w, and 130w configurations pretty easily.
You can normally get 100w H3 bulbs at your local Advance, Auto Zone, or Wal Mart... Sometimes you have to snip one little locating pin off of them so they'll fit, but its not difficult at all. Once you get the bulb, you'll see what I mean.
But yea, I'd say that like 95% of the standard auxiliary lights run those H3 bulbs, and they've been that way for years! I've got a pair of 30 year old Hella's that use em!
Edit: Oh and a quick note. Usually anything above 55w is illegal on the road!
Just saying. I of course would never run anything brighter than 55w bulbs in mine!