I looked for this info in the VX knowledge base, but didn't see it there, wasn't this listed under "electrical" at one time in the knowledge base? Shouldn't it be? Anyways here is the info:

2001 ISUZU Vehicross

High & low beam headlamp
9003/H4

Parking light
194

Front turn signal
1156

Rear turn signal
1156

Tail light
1157

Stop light
1157

High mount stop light
Assembly

License plate
168/194

Back up light
1156

Front sidemarker
194

Rear sidemarker
194

Ash tray
74

Dome light
DE3175

Instrument-general
158 & 74 & 194