Note Always make a backup file and place a copy of you aircraft.cfg and panel.cfg files into it before you make any modification.
After 2 hrs of testing I have found everything you need along with a little extra. Basically you need to make the default boeing 737 panel read (you can find the panel in your fsx file under simobjects/aircraft/boeing 737 and it will be in the panel folder the aircraft will be in the main folder at the bottom)
gauge29=shockwave_lights!SW Lights_taxi_gear, 1,1,1,1 //shockwave light
Before saving the panel again make sure you select:FileSave as
Change SAVE AS TYPE
to all files
Then look for your panel.cfg file
and select it and over right it
Then open you aircraft.cfg
Modify these line to read as follows:light.10 = 5, 5.6, 7.28, -1.47, fx_Shockwave_landing_light_narrow // Shockwave light
light.11 = 5, 5.6, -7.28, -1.47, fx_Shockwave_landing_light_narrow // Shockwave light
light.12 = 6, 41.85, 0.0, -6.8, fx_Shockwave_landing_light_small_xenon // Shockwave light
light.13 = 6, 36, 0, -18, fx_shockwave_landing_light_light // Shockwave light
Save the aircraft.cfg file the same way you saved the panel.cfg.
There you have it all fixed and you also have a neat modern xenon for you front gear. You will also not need to turn off taxi light on takeoff because when you raise the gear they automatically go off. If you want the standard gear light just delete _small_xenon and there you have it.
If you have any further questions feel free to email me at firstname.lastname@example.org
and put a2a questions in the subject and I will get back to you as soon as I can
Thanks and hope this helpsMike RichardMtmikepsl