my vote is lights on fogs on. visibility = safety!!!
where are you hiding 3 ballasts?
what housing,lamp, bulb are you using for fogs?
I have 2 ballasts and since I'm running after market headlights, i have to stuff alot into neck area.
you must have separate aka to battery/ or power block to power HID. it has x amount of draw and i don't think you could share circuit with headlight especially if HID. I'm sure an electrical guru will advise with more technical answer. plus it no big deal to run power.
I'm concerned about heat build up in such a small light. Some sites warn against using them in confined spaces. ?!?! aka fog lights
you could splice 3 connectors into one ( i had 2 into one with regular dual headlight)
H4 connector. power to battery, ground to coil. then to hid wiring harness
did you get dual hid system or are you going to splice together? splicing 2 to one or any splicing on HID system isn't as easy as solder heat shrink run.... ask me how i know. Best to buy dual HID.
again im no electrical genius but do have experience in installing dual head lights.
in your case you wont need HI low switch? did your HID rig come with hi/low connectors? who did you buy yours from?
While service is poor and shipping for some products +15 days. i still recommend DDM for low price to value.