M -

We all help each other, right. In the van the r-pack is located on the lower left corner of the blower motor assembly. Reference the post by fillupamerica 12/9/2013 in this thread and the pic showing the blower motor assembly. See the little black plastic thing behind the relay fuse tray marked with 263 - that is the r-pac. For the Previa (if I remember the posts correctly) you lift the hood and look at the heater blower motor case assembly on the right side of the firewall. Both of these use a 4 wire plug assembly but have different shapes -pentangle on the original van and square on the Previa. You have to hack the blower motor case a little to use the Previa r-pack.
Cheers!

SoORYotas