this may take some time, but if the unit isn't in the fuse box then there is only one or two places i've ever seen them. look under the dashboard near the driver side kick panel. if it's not tnere then it can be in only one other place that is behind the glove box. look under the dashboard where the glove box is and see if it is there it should be. hope this helps you:
Mickey-G
August 2008