Soldered the headset jacks tonight. Took much longer than expected, but I spent plenty of time ensuring that my wires were going to the correct terminal posts. This was because I found conflicting drawings between Stein and Garmin. Of course, Stein's drwg was wrong and we got it all corrected. I called Stein so they could fix the incorrect schematic before someone else wired theirs up wrong. I believe my drawing was an isolated escape.