Rodeo fans not working

I have a holden (isuzu) 1999 6cyl 2wd crew cab rodeo.

Just the other day the internal fans stopped working.

Searching the net I found that it might be a resisitor on the fan motor, not sure what that looks like.

Anyone think this could be the problem or have a pic of what it looks like.

Thanks.

OK I bought a new resistor (pricey little things ) and installed it, was pretty easy in the end.

Checked the fans and they still don't work, I can hear the air conditioning click and the engine revs change but still no fans working in the cab.

How do you check if the fan motor is working ?

I can see at the bottom it seems to be held in by 4 screws, its on the bottom of all the plastic.

Do I just take this bit off to get to the motor ?

What traps are there ?