for some reason i cant find any links to the hella p/n 70476 except for this one which doesnt look like the complete housing
MAF Hella European Style Halogen Headlights for Off-Road Use
and found a white bulb for 6$ a piece? different p/n though and of course cant find it now on bing...
If you read down on my page with the parts numbers and the process description, you'll see that the H6024 conversion kit at Susquehanna has Two lamps, Two dust boots and two H4 bulbs of your choice. This is the easiest way to order what you need (you have to add the plug, but otherwise, it's what you need). The link to their page with this is:
Susquehanna MotorSports - Auto Performance Product
You will have to send them a note, or call them, because the order page is set up for 12 volt burners. You have to tell them to delete the 12v stuff from the kit and substitute 24 volt burners...
Or
Go with the HL79562 7" Round H4 E-Code Headlamp, Each. Includes: Dust Boot, No H4 Bulb. Keep in mind that you then need to order two, and then you need to order two burners (bulbs)... The link to thier page with this is:
Susquehanna MotorSports - Auto Performance Product
70476 is the "old" part number... Hella also has a HL95146 7" Round ECE Headlamp with city lamp (a H3 bulb in the housing along with the H4 driving light), but you don't want this as it is more expensive due to having the H3 bulb offset inside the housing for very low level (European city driving) lighting..aka, a parking light...
The 24 volt burners (bulbs) come in a couple of flavors, all described at:
Susquehanna MotorSports - Auto Performance Product
HL78160 - 75/70W 1800 Lumens, 150 Hr Avg Live
HL78143 - 75/70W Heavy Duty, 1800 Lumens, 225 Hr Avg Life
HL78146 - 100/90W 2390 Lumens, 100 Hr Avg Life
I use the HL78143. If you go with the "hotter" bulb, you need to consider if you will overload the wire (it's pretty small diameter) and you will need to add a relay so you don't overload the circuit breaker...
In case you ever want one in 6v (for the older rigs), they have that as well, just not in a Hella burner (bulb). It's described at:
Susquehanna MotorSports - Auto Performance Product
Hope that this helps...