re: 'You have to convert this to D.C. (direct current) if you want to run a system similar to my 2004 machine.'
Uh, in a word, no.
If you have a US model kdx, you do NOT have a DC system.
I think I said that already.
Click
HERE!
to read that.
;)
Bulbs run fine on AC. Yanno those things you have hanging from the ceiling in your house?......
As far as a '91 250 goes, I don't know...but I said that already, too. Wanna link to THAT thread, too? ;)
Again...verify you have a VR...and that it is NOT out of the circuit as part of your wiring process.
Cheers!