Moncha (Scott) had an idea for creating a pigtail using connectors from radio shack, attach them to the appropriate places, then spray with Pam or lubricant to avoid sticking, use a hot glue gun to fill the area with glue. Once it dries, you should have a pig tail. I have not tried this yet - but it sounds feasible. As far as the pins on the back of the switch, the dealer should be able to look it up for you, or try posting on the general Isuzu board.
"If you're not living on the edge --- you're taking up too much space!!"