It worked! I now have full control from my steering wheel. I am still having one problem which I do not think is the empeg. The volume up button is very flaky. I've tested the voltage drop on the control line entering the SG1 and that seems good. I haven't tested the output on the miniplug which goes into the radio module. So I may have a bad SG1 module. I'll try to dork around with that this weekend. But, it does work occationally. I can, however, get volume up by pressing the volume down button once, then use the seek up to control the volume which works out quite nicely.

Happily thumbing through my music,
greg porras