That said, however, the yellow/blue lights do not function, even though the graphic for the switches is showing correctly on the Sprinter's dash.
Do you mean the lights don't light up? Strangely, the logfile doesn't really say anything helpful and the warnings and errors aren't directly connected to your described issue. Maybe try installing the mod on a freshly reinstalled Sprinter?
381 17:20:40 - - Warning: Sound load: Error while creating DS Sound Buffer, DSERR_BUFFERTOOSMALL
382 17:20:41 - - Warning: Sound vehicles\Mercedes-Benz Sprinter_12D\sound\Engine old/start2.wav could not be loaded! - Error: Tried to create a DSBCAPS_CTRLFX buffer shorter than DSBSIZE_FX_MIN milliseconds. (-2005401420)
383 17:20:41 - - Warning: Sound load: Error while creating DS Sound Buffer, DSERR_BUFFERTOOSMALL
384 17:20:41 - - Warning: Sound vehicles\Mercedes-Benz Sprinter_12D\sound\Engine old/xstart2.wav could not be loaded! - Error: Tried to create a DSBCAPS_CTRLFX buffer shorter than DSBSIZE_FX_MIN milliseconds. (-2005401420)
Some things I've noticed in the instructions:-
Step 7c (Emergency Version) and Step 6b (Maintenance Version): It says to change the path below [MODEL] to 'model_MB_312D ... ', but in the screenshot, it shows the highlighted text as, 'model\model_MB_312D ... '. Of course, the correct method is to use the word 'model' twice, but this did cause some confusion first time round.
Step 6 (Maintenance Version): It says to open the MB_312D_sd_FW.bus file and rename to MB_312D_sd_WW.bus. I thought this might be a typo and instead renamed a copy of MB_312d_sd_.bus to MB_312D_sd_WW.bus, to keep the procedure consistent with the Emergency version. Is this where I went wrong
???
You have indeed spotted a few tiny mistakes I made! While the first error is present in both German and English instructions, the second one only exists in the English translation. Luckily, the screenshots show the right entries.