I'm going to take a stab in the dark here...
I've found out from calling directly to Isuzu America that all these vehicles have the same "guts" basically... all of these have the same engine for sure and will ALL interchange with the VX, you might want to see if you can find the AC resistor for these and see if they will work with your JDM(?)

* Isuzu Bighorn
* Subaru Bighorn
* Isuzu Trooper
* Opel Monterey
* Vauxhall Monterey
* Holden Jackaroo/Monterey
* Honda Horizon
* Acura SLX
* Chevrolet Trooper
* 1998-1999 3.5L ACURA SLX 6VE1 V6 DOHC 24V
* 2002-2004 3.5L ISUZU AXIOM V6 6VE1 DOHC 24V
* 1998-2002 3.5L ISUZU TROOPER V6 6VE1 DOHC 24V
* 1999-2001 3.5L ISUZU VehiCROSS V6 6VE1 DOHC 24V
* ISUZU TROOPER 00 (3.5L, 6 cyl, VIN "X" 8th digit)
* ISUZU TROOPER 01 (3.5L, 6 cyl, VIN "X" 8th digit), thru 5/01

Hope this helps...