Yrey, I also have a 1995 Southwind. I'm not very knowledgeable on these things yet, but the ECC unit on mine is behind the bottom drawer, under the pantry(?) on the right side of the breaker/fuse door. Take out the bottom drawer and you'll find it. Mine has 2 fuses on the left end, not easy to get at. I'm not sure if this is the unit you're looking for. This is where mine has the test switch for the a/c units. Hope this helps.
If I can't stay young,
I can at least stay immature.