I don't KNOW, jimini, but . . .
. . . assuming the 6v system follows standard coil/alternator/rectifier practice, and if the T10 0a(th) has a 2 wire alternator, it's dead easy to make the conversion.You get a combined 12v regulator rectifier from Podtronics or whomever and you wire the alternator a/c leads and the rectified dc main feed to the battery (via switch or ammeter) the way it says on the box, and it's done. Need 12v coil(s) though . . . and don't need the rectifier that's on there. It's a better route than a Zener diode to get rid of the excess charge/heat, and frankly cheaper too, given the price of the heat sink and the zener and maybe a new rectifier. The old ET system was there to save needing a battery etc . . .
If the T100A has an older-style 3 wire alternator which had three wires, with the alternator coils being switched in and out according to load by the light switch, not sure what's the best route to 12v because I haven't done it - but someone here will know.
No idea about colour-coding of wires, sorry - and wouldn't necessarily believe it was correct after all these years anyway. . .