Those cheap fixtures are substandard, in my opinion.
I think you're better off buying commercial grade used fixtures,, or at least using a better ballast.
Many people have recommended upgrading to the newer electronic ballasts and there are some more efficient options.
The HO and VHO are designed for cold weather, which always affects fluorescents.
I was in a huge distribution warehouse with 30 or 40 foot ceilings.
It is entirely lit in 4 foot ceiling fixtures and bright.
I haven't researched the upgrades, but the consensus is that they work.
I found some ballasts that will accept a very wide range of voltages, so more tolerant of the electrics.
I can assure you of better brightness, especially in cold weather with even a good used ballast.
I don't know if your starting problems will go away with better ballasts, in terms of overloading the inverter.
They all take more power to start when cold.
If you want me to research options, I could do that.
I have paid about $10 each for nice 2-tube fixtures used.
Regarding fog lamps, there are dust storms and dust storms.
The real goal is driving with adequate visibility and the difference is dramatic in bad conditions with the right pattern.
On the highway, it can mean passing someone while going 40 mph, who can't see to safely go 5 mph.
I rarely use them, but when I have, it's been a lifesaver.
And you can get by with a single good one.
FYI, size matters with fogs because the light comes only from the reflector.
You can certainly get by without them on the playa, especially with a highly lit vehicle, but in a persistent wind, it might mean the difference between being stuck somewhere and limping back to camp safely.
http://www.danielsternlighting.com/tech ... lamps.html
By the way, I use a driving light made with a shrouded bulb like a fog lamp but with the long range pattern.
It is quite unusual in the beam control.
It is the last of the Marchal line still available.
(I don't use amber.)
This is an example of a european low beam pattern.
Note the rise on the right to light the side of the road.
You can see some visibility above the cutoff, which would not be there with a fog beam.
This pattern is superb in fog and rain, up to a point and then it fails.
In extreme conditions, fog lamps are not
used with low beams.
On the playa, it would be necessary to dim scattered lighting in worst conditions.
Euro code headlamps are available in external mount housings at good prices, as are universal bolt-on setups.
Sometimes for tractors, bikes, etc they are not labeled as such.
The E1 emblem should be visible on the lens.