tonight i was driving around and at first both of my hella 500s were working fine, i turned them off, then later during the driving escapades, i turned them back on to discover one didnt turn back on. any ideas on what went caput?

 

I'd check the ground wire first that comes off the light housing Doink.

Then perhaps switch bulbs and see if it then works.
The filiments in those bulbs can be hard to see sometimes if there is an actual break in the filiment wire.

Also if you have a tester, you can probe where the wire(s) come off of your relay, and hook the other probe to ground.

Are you using two terminals of your relay for two seperate power wires (the black ones are the hot wire) or are you using just one hot wire off of the relay for both lights?

I only use one of the hot terminals off of my relays.

 

If it is the bulb Performance Projucts carries Hella Bulbs. When I purchased my Hella Black magics I upgraded to Hella's 100 watt bulbs.

 

alright guys, i found the problem...my ground was just being anal so i switched it to another location